Add basic issue template

This directs users to ask questions on stackoverflow instead of here

Author: mjbvz

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,8 @@
+blank_issues_enabled: false
+contact_links:
+  - name: 🙋 Ask Question
+    about: Ask questions about developing VS Code extensions on Stack Overflow.
+    url: 'https://stackoverflow.com/questions/tagged/vscode-extensions'
+  - name: 💬 Discuss
+    url: https://github.com/microsoft/vscode-discussions/discussions
+    about: Discuss extension development questions and ideas with the VS Code developer community.

.github/ISSUE_TEMPLATE/report-issue.yml

@@ -0,0 +1,35 @@
+name: 🐛 Report Extension Sample Issue
+description: Report an issue with one of the extension samples.
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thank you for taking the time to fill out this bug report! Please make sure to fill in the following sections:
+  - type: input
+    id: sample-name
+    attributes:
+      label: Extension sample
+      description: Name of the extension sample that you are reporting with issue in
+      placeholder: extension-sample-name
+    validations:
+      required: true
+  - type: input
+    id: vscode-version
+    attributes:
+      label: VS Code version
+      description: The version of VS Code that the issue reproduces in
+      placeholder: 1.xx.x
+    validations:
+      required: true
+  - type: textarea
+    id: what-happened
+    attributes:
+      label: What went wrong?
+      description: |
+        Tell us what what went wrong. Be sure to include:
+
+        - What were you trying to do?
+        - What went wrong?
+        - What was the expected behavior?
+    validations:
+      required: true