ci: comment-on-pr and pr/issue templates (#3)

Signed-off-by: M. Fatih Cırıt <[email protected]>

.github/ISSUE_TEMPLATE/bug.yaml

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+name: Bug
+description: Report a bug
+body:
+  - type: checkboxes
+    attributes:
+      label: Checklist
+      description: Confirm the following items before proceeding. If one cannot be satisfied, create a discussion thread instead.
+      options:
+        - label: I've read the [contribution guidelines](https://github.com/autowarefoundation/autoware/blob/main/CONTRIBUTING.md).
+          required: true
+        - label: I've searched other issues and no duplicate issues were found.
+          required: true
+        - label: I'm convinced that this is not my fault but a bug.
+          required: true
+
+  - type: textarea
+    attributes:
+      label: Description
+      description: Write a brief description of the bug.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Expected behavior
+      description: Describe the expected behavior.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Actual behavior
+      description: Describe the actual behavior.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Steps to reproduce
+      description: Write the steps to reproduce the bug.
+      placeholder: |-
+        1.
+        2.
+        3.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Versions
+      description: Provide the version information. You can omit this if you believe it's irrelevant.
+      placeholder: |-
+        - OS:
+        - ROS 2:
+        - Autoware:
+    validations:
+      required: false
+
+  - type: textarea
+    attributes:
+      label: Possible causes
+      description: Write the possible causes if you have any ideas.
+    validations:
+      required: false
+
+  - type: textarea
+    attributes:
+      label: Additional context
+      description: Add any other additional context if it exists.
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false
+contact_links:
+  - name: Question
+    url: https://github.com/autowarefoundation/autoware/discussions/new?category=q-a
+    about: Ask a question
+
+  - name: Feature request
+    url: https://github.com/autowarefoundation/autoware/discussions/new?category=feature-requests
+    about: Send a feature request
+
+  - name: Idea
+    url: https://github.com/autowarefoundation/autoware/discussions/new?category=ideas
+    about: Post an idea

.github/ISSUE_TEMPLATE/task.yaml

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+name: Task
+description: Plan a task
+body:
+  - type: checkboxes
+    attributes:
+      label: Checklist
+      description: Confirm the following items before proceeding. If one cannot be satisfied, create a discussion thread instead.
+      options:
+        - label: I've read the [contribution guidelines](https://github.com/autowarefoundation/autoware/blob/main/CONTRIBUTING.md).
+          required: true
+        - label: I've searched other issues and no duplicate issues were found.
+          required: true
+        - label: I've agreed with the maintainers that I can plan this task.
+          required: true
+
+  - type: textarea
+    attributes:
+      label: Description
+      description: Write a brief description of the task.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Purpose
+      description: Describe the purpose of the task.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Possible approaches
+      description: Describe possible approaches for the task.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Definition of done
+      description: Write the definition of done for the task.
+    validations:
+      required: true

.github/pull_request_template.md

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+## Description
+
+## Related links
+
+**Parent Issue/PR:**
+
+- PR
+
+**Links to the definitions of the words added:**
+
+- Word
+
+<!-- ⬇️🟢
+**Private Links:**
+
+- [CompanyName internal link]()
+⬆️🟢 -->
+
+## Notes for reviewers
+
+None.

.github/workflows/comment-on-pr.yaml

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+name: comment-on-pr
+on:
+  pull_request_target:
+
+jobs:
+  comment-on-pr:
+    runs-on: ubuntu-22.04
+    permissions:
+      pull-requests: write
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Initial PR comment
+        uses: marocchino/sticky-pull-request-comment@v2
+        with:
+          message: |
+            Thank you for contributing to the Autoware project!
+
+            🚧 If your pull request is in progress, [switch it to draft mode](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/changing-the-stage-of-a-pull-request#converting-a-pull-request-to-a-draft).
+
+            Please ensure:
+            - You've checked our [contribution guidelines](https://autowarefoundation.github.io/autoware-documentation/main/contributing/).
+            - Your PR follows our [pull request guidelines](https://autowarefoundation.github.io/autoware-documentation/main/contributing/pull-request-guidelines/).
+            - All required CI checks pass before [marking the PR ready for review](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/changing-the-stage-of-a-pull-request#marking-a-pull-request-as-ready-for-review).