feat: init the repo

.github/pull_request_template.md

@@ -0,0 +1,24 @@
+## Summary
+
+<!-- Brief description of what this PR does. -->
+
+## Type of change
+
+- [ ] Bug fix (non-breaking change that fixes an issue)
+- [ ] New feature / new indicator (non-breaking change)
+- [ ] Breaking change (fix or feature that changes existing behaviour)
+- [ ] Documentation / infrastructure only
+
+## Checklist
+
+- [ ] All existing tests pass (`pytest tests/`)
+- [ ] New tests have been added for any new behaviour
+- [ ] `cargo fmt --check` passes
+- [ ] `cargo clippy --release -- -D warnings` passes
+- [ ] README accuracy table updated (if indicators were added or changed)
+- [ ] CHANGELOG.md updated (for user-visible changes)
+- [ ] Docstrings added or updated for new/changed public functions
+
+## Related Issues
+
+Closes #<!-- issue number -->