Add PR templates for bug fixes and features with issue requirement (#257)

Co-authored-by: Skippy Bot <botmorten@users.noreply.github.com>

Author: botMorten

.github/PULL_REQUEST_TEMPLATE.md

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+## Related Issue (required)
+> Please link an existing issue for this PR.
+>
+> If no issue exists yet, **create one first** before requesting review.
+
+Closes #
+
+## PR Type
+- [ ] Bug fix
+- [ ] Feature / Enhancement
+- [ ] Refactor / Internal
+- [ ] Documentation
+
+## Summary
+- 
+
+## Validation
+- [ ] Tests added/updated where practical
+- [ ] Local build/tests/smoke checks run
+- [ ] Docs updated (if needed)
+
+## Notes
+- 

.github/PULL_REQUEST_TEMPLATE/bug_fix.md

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+## PR Type
+- [x] Bug fix
+
+## Related Issue (required)
+> Please link the issue this PR fixes.
+>
+> If no issue exists yet, **stop and create one first** before requesting review.
+
+Fixes #
+
+## What changed
+- 
+- 
+
+## Root cause
+- 
+
+## Validation
+- [ ] Repro before fix
+- [ ] Repro no longer occurs after fix
+- [ ] Added/updated tests where practical
+- [ ] Ran relevant local validation (build/tests/smoke)
+
+## Breaking changes
+- [ ] None
+- [ ] Yes (describe below)
+
+## Notes for reviewers
+- 

.github/PULL_REQUEST_TEMPLATE/feature.md

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+## PR Type
+- [x] Feature / Enhancement
+
+## Related Issue (required)
+> Please link the issue this PR implements.
+>
+> If no issue exists yet, **stop and create one first** before requesting review.
+
+Resolves #
+
+## Problem statement
+- 
+
+## Proposed solution
+- 
+
+## Alternatives considered
+- 
+
+## Validation
+- [ ] Added/updated tests
+- [ ] Updated documentation (if needed)
+- [ ] Manual verification completed
+
+## Breaking changes
+- [ ] None
+- [ ] Yes (describe below)
+
+## Notes for reviewers
+-