Merge pull request #9 from whyphi/dev

Merge: `dev` to `main`

.github/CODEOWNERS

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+@jinyoungbang
+@IvanYangg

.github/PULL_REQUEST_TEMPLATE.md

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+## Purpose of PR
+
+<!-- Please include a summary of why the PR is being created. Please also include relevant motivation and context -->
+
+
+## Type of change
+
+- [ ] User Update: Adding/Delete/Modifying users in vault
+
+- [ ] Fix: Bug fix (non-breaking change which fixes an issue)
+- [ ] Refactor: Any code refactoring
+- [ ] Chore: technical debt, workflow improvements
+- [ ] Feature: New feature (non-breaking change which adds functionality)
+- [ ] Documentation: This change requires a documentation update
+
+
+## Additional Comments