Add issue template

.github/ISSUE_TEMPLATE.md

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+# Prerequisites
+
+Please answer the following questions for yourself before submitting an issue. **YOU MAY DELETE THE PREREQUISITES SECTION.**
+
+- [ ] I am running the latest version
+- [ ] I checked the documentation and found no answer
+- [ ] I checked to make sure that this issue has not already been filed
+
+## Context
+
+Please provide any relevant information about your setup. This is important in case the issue is not reproducible except for under certain conditions.
+
+* Operating System:
+* Thunderbird version number:
+* 64 bit/32 bit:
+* LookOut (fix version) version number:
+
+# Expected Behavior
+
+Please describe the behavior you are expecting
+
+# Current Behavior
+
+What is the current behavior?
+
+## Steps to Reproduce
+
+Please provide detailed steps for reproducing the issue.
+
+1. step 1
+2. step 2
+3. you get it...
+
+# Failure Information (for bugs)
+
+Please help provide information about the failure if this is a bug. If it is not a bug, please remove the rest of this template.
+
+```
+Paste code here
+```
+
+<details>
+<summary>Failure Logs</summary>
+
+```
+Paste Logs here
+```
+</details>