feat: Adding PR and issue templates

.github/ISSUE_TEMPLATE/01-bug_report.md

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+---
+name: Bug report
+about: Create a bug report to help us improve Terragrunt IAC Engines.
+title: ''
+labels: bug
+assignees: ''
+
+---
+
+## Describe the bug
+
+A clear and concise description of what the bug is.
+
+## Steps To Reproduce
+
+Steps to reproduce the behavior, code snippets and examples which can be used to reproduce the issue.
+
+```hcl
+// paste code snippets here
+```
+
+## Expected behavior
+
+A clear and concise description of what you expected to happen.
+
+## Nice to haves
+
+- [ ] Terminal output
+- [ ] Screenshots
+
+## Versions
+
+- Terragrunt version:
+- IAC Engine version:
+- OpenTofu/Terraform version:
+- Environment details (Ubuntu 20.04, Windows 10, etc.):
+
+## Additional context
+
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/02-rfc.yml

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+# Inspired by:
+# - The previous RFC template.
+# - the OpenTofu RFC template: https://raw.githubusercontent.com/opentofu/opentofu/main/.github/ISSUE_TEMPLATE/rfc.yml
+# - The Terragrunt RFC template: https://raw.githubusercontent.com/gruntwork-io/terragrunt/master/.github/ISSUE_TEMPLATE/02-rfc.yml
+
+name: RFC
+description: Submit a Request For Comments (RFC).
+labels: ["rfc", "pending-decision"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        # Request For Comments
+
+        This form will guide you through the process for submitting a Request For Comments (RFC) for a change.
+
+        ## Before you start
+
+        - Make sure you search for an issue that would already cover your RFC in the [issues tab](https://github.com/gruntwork-io/terragrunt/issues?q=is%3Aissue).
+        - Search through [Terragrunt documentation](https://terragrunt.gruntwork.io/docs/) to see if your RFC is already supported.
+
+        ## After you submit
+
+        - Share your RFC with your community for feedback and reactions! The more activity and feedback you get, the more likely it is to be reviewed by the maintainers.
+        - If your RFC has enough traction, it will be reviewed by the maintainers and a decision will be made.
+        - Once a decision is made, one of two things will happen:
+          1. If the RFC is accepted, the `pending-decision` label will be replaced with the `accepted` label. At this stage, pull requests can be submitted by maintainers or the community to implement the RFC, with a description including `Closes #<RFC number>`.
+          2. If the RFC is rejected, the `pending-decision` label will be replaced with the `rejected` label. The maintainers will provide a reason for the rejection. If applicable, it might be made clear that a new RFC with changes is welcome.
+
+  - type: textarea
+    id: summary
+    attributes:
+      label: Summary
+      description: A brief summary of the RFC.
+    validations:
+      required: true
+
+  - type: textarea
+    id: motivation
+    attributes:
+      label: Motivation
+      description: What is the problem you're trying to solve? What are the goals you're trying to achieve?
+    validations:
+      required: true
+
+  - type: textarea
+    id: proposal
+    attributes:
+      label: Proposal
+      description: |
+        In a manner that is as specific as possible, describe the proposal you have in mind. This should include:
+        - As minimally technical a description of the proposal as possible.
+        - An explanation of how the proposal addresses the motivation above.
+        - Examples of how the proposal might present itself to a user if implemented.
+    validations:
+      required: true
+
+  - type: textarea
+    id: technical-details
+    attributes:
+      label: Technical Details
+      description: |
+        Provide technical details for the proposal. This should include:
+        - List of components that will be affected by the proposal.
+        - How those components will be affected.
+        - Any documentation that will help in understanding or developing a solution to the proposal.
+    validations:
+      required: true
+
+  - type: textarea
+    id: press-release
+    attributes:
+      label: Press Release
+      description: If this RFC were implemented, how would you describe it to the community in a mock press release?
+    validations:
+      required: true
+
+  - type: textarea
+    id: drawbacks
+    attributes:
+      label: Drawbacks
+      description: What are the drawbacks of the proposal, if any?
+    validations:
+      required: false
+
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Alternatives
+      description: What are the alternatives to the proposal, if any?
+    validations:
+      required: false
+
+  - type: textarea
+    id: migration-strategy
+    attributes:
+      label: Migration Strategy
+      description: If this proposal requires a migration strategy for existing code bases, what is it?
+    validations:
+      required: false
+
+  - type: textarea
+    id: unresolved-questions
+    attributes:
+      label: Unresolved Questions
+      description: |
+        What parts of the proposal are still unresolved?
+        - Is there anything that you're unsure about?
+        - Are there any questions that you have that you haven't answered yet?
+        - Would you like to encourage feedback on any particular part of the proposal you haven't fully fleshed out?
+    validations:
+      required: false
+
+  - type: textarea
+    id: references
+    attributes:
+      label: References
+      description: |
+        Are there any references that should be linked here?
+        - Links to other RFCs, issues, or documentation.
+    validations:
+      required: false
+
+  - type: textarea
+    id: poc-pull-request
+    attributes:
+      label: Proof of Concept Pull Request
+      description: If you have a proof of concept or an in-draft pull request that demonstrates the proposal, please link it here.
+    validations:
+      required: false
+
+  - type: checkboxes
+    id: support
+    attributes:
+      label: Support Level
+      description: Please let us know if you are a paying customer. This helps us prioritize RFCs that are important to our customers.
+      options:
+        - label: I have Terragrunt Enterprise Support
+          required: false
+        - label: I am a paying Gruntwork customer
+          required: false
+
+  - type: input
+    id: customer-name
+    attributes:
+      label: Customer Name
+      description: If you are a paying Gruntwork customer, please provide your name.
+    validations:
+      required: false
+

.github/pull_request_template.md

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+<!-- Prepend '[WIP]' to the title if this PR is still a work-in-progress. Remove it when it is ready for review! -->
+
+## Description
+
+Fixes #000.
+
+<!-- Description of the changes introduced by this PR. -->
+
+## TODOs
+
+Read the [Gruntwork contribution guidelines](https://gruntwork.notion.site/Gruntwork-Coding-Methodology-02fdcd6e4b004e818553684760bf691e).
+
+- [ ] Update the docs.
+- [ ] Run the relevant tests successfully, including pre-commit checks.
+- [ ] Ensure any 3rd party code adheres with our [license policy](https://www.notion.so/gruntwork/Gruntwork-licenses-and-open-source-usage-policy-f7dece1f780341c7b69c1763f22b1378) or delete this line if its not applicable.
+- [ ] Include release notes. If this PR is backward incompatible, include a migration guide.
+
+## Release Notes (draft)
+
+<!-- One-line description of the PR that can be included in the final release notes. -->
+Added / Removed / Updated [X].
+
+### Migration Guide
+
+<!-- Important: If you made any backward incompatible changes, then you must write a migration guide! -->
+