Add pre-commit hook for validating release notes

- This is a pre-commit hook using `pre-commit` framework to validate release notes YAML files.
- The hook checks for correct structure, formatting and required fields in the `release-notes` directory.
- This ensures consistency in release notes before committing changes.
- Added release notes validation to the `make syntax-check` target

Ref: #934 (comment)

.pre-commit-config.yaml

@@ -0,0 +1,8 @@
+repos:
+- repo: local
+ hooks:
+ - id: validate-release-notes
+ name: Validate Release Notes
+ entry: python ci/check-release-notes.py
+ language: python
+ files: ^release-notes/.*\.yml$

Makefile

@@ -1,7 +1,7 @@
-.PHONY: syntax-check
-syntax-check:
- @find streams updates -iname '*.json' | sort | xargs -n 1 python3 -c 'import json, sys; json.load(open(sys.argv[1]))'
+.PHONY: syntax-check pre-commit-check print-rollouts
 
-.PHONY: print-rollouts
+syntax-check: pre-commit-check
+ @find streams updates -iname '*.json' | sort | xargs -n 1 python3 -c 'import json, sys; json.load(open(sys.argv[1]))'
+ @find release-notes -iname '*.yaml' | sort | xargs -n1 python3 ci/check-release-notes.py
 print-rollouts:
  @find updates -iname '*.json' -printf '%f\n' | cut -f1 -d. | sort | xargs ./rollout.py print