chore: add pr template

.github/PULL_REQUEST_TEMPLATE.md

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+## Issue ID/Name
+
+<!--Linear card ID-->
+
+## Description
+
+<!--What does this PR do? What is being changed, added, or removed? Does it introduce any breaking changes?-->
+
+## Checklist
+
+<!--Put the 'X' inside the [] to check. Most of the time, everything should be checked.-->
+
+- [ ] I have self-reviewed my code.
+- [ ] I have commented on my code, particularly in the hard-to-understand area.
+- [ ] New and existing unit tests pass locally with my change.
+- [ ] I have tagged a reviewer for this PR.
+- [ ] (Should Be) I have NOT committed the modified environment/config file(s) to this PR.
+
+## Additional configuration/environment
+
+## Test result
+
+<!--Add your test screenshot(s) here-->
+
+## Screenshot(s)
+
+<!--Add your screenshot(s) here, caption for the image is recommended.-->
+
+## Reviewer
+
+<!--Person who needs to review your PR-->
+
+## Remark
+
+<!--Further information about this PR-->