Create pull_request_template.md (#197)

Initial draft of PR template

[ROCm/hip-tests commit: 91de6c98c3]

projects/hip-tests/.github/pull_request_template.md

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+## Associated JIRA ticket number/Github issue number
+<!-- For example: "Closes #1234" or "Fixes SWDEV-123456" -->
+
+## What type of PR is this? (check all applicable)
+
+- [ ] Refactor
+- [ ] Feature
+- [ ] Bug Fix
+- [ ] Optimization
+- [ ] Documentation Update
+- [ ] Continuous Integration
+
+## What were the changes?
+
+<!-- Please give a short summary of the change. -->
+
+## Why are these changes needed?
+
+<!-- Please explain the motivation behind the change and why this solves the given problem. -->
+
+## Updated CHANGELOG?
+
+<!-- Needed for Release updates for a ROCm release. -->
+
+- [ ] Yes
+- [ ] No, Does not apply to this PR.
+
+## Added/Updated documentation?
+
+- [ ] Yes
+- [ ] No, Does not apply to this PR.
+
+## Additional Checks
+
+- [ ] I have added tests relevant to the introduced functionality, and the unit tests are passing locally.
+- [ ] Any dependent changes have been merged.