Add bug report issue template

Adds a template which contains information on how to view the extension logs, and requests use of the debug .vsix to get more information

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,36 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+_Before filing a bug report, please try to reproduce your issue using the latest debug .vsix file from [GitHub Actions](https://github.com/raspberrypi/pico-vscode/actions/workflows/release.yml?query=branch%3Amain). This will provide more debug information than the release build._
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**Extension Logs**
+Relevant extracts of the extension log showing the errors with this extension, which can be viewed using Help -> Toggle Developer Tools and clicking on the Console.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Platform (please complete the following information):**
+ - OS: [e.g. Windows 11, macOS, Raspberry Pi OS]
+ - Architecture: [e.g. x86, Arm64]
+
+**Additional context**
+Add any other context about the problem here.