Add synced pull request template

.github/sync.yml

@@ -30,6 +30,9 @@ group:
       - source: sync-templates/.editorconfig
         dest: .editorconfig
 
+      - source: sync-templates/.github/pull_request_template.md
+        dest: .github/pull_request_template.md
+
       - source: sync-templates/.github/linters/.markdownlint.yml
         dest: .github/linters/.markdownlint.yml
 

sync-templates/.github/pull_request_template.md

@@ -0,0 +1,30 @@
+<!--
+Thank you for contributing to Radius! Please fill out each section below so
+reviewers have the context they need. Sections marked optional can be removed
+if they do not apply.
+-->
+
+## Summary
+
+<!-- Provide a concise description of what this PR does. -->
+
+## Reason for change
+
+<!--
+Explain why this change is needed. If it addresses a GitHub issue, link it
+below so it is automatically closed when this PR merges (optional).
+-->
+
+Fixes #<!-- issue number (optional) -->
+
+## How to test
+
+<!-- Describe the steps a reviewer can take to verify these changes. -->
+
+## File change summary
+
+<!-- Summarize the change made in each file that was modified. -->
+
+| File | Summary of change |
+| ---- | ----------------- |
+|      |                   |