Add validation make targets #3

	name: Control Plane Validation

	on:
	push:
	pull_request:

	jobs:
	validate-control-plane:
	runs-on: ubuntu-latest
	steps:
	- name: Check out repository
	uses: actions/checkout@v4

	- name: Show Python version
	run: python3 --version

	- name: Validate JSON syntax
	run: \|
	python3 - <<'PY'
	import json
	import pathlib
	import sys

	failed = False
	for root in (pathlib.Path('schemas'), pathlib.Path('examples')):
	if not root.exists():
	continue
	for path in sorted(root.rglob('*.json')):
	try:
	json.loads(path.read_text())
	except Exception as exc:
	print(f'{path}: invalid JSON: {exc}', file=sys.stderr)
	failed = True
	if failed:
	raise SystemExit(1)
	print('JSON syntax validated.')
	PY

	- name: Validate control-plane examples
	run: python3 tools/validate_control_plane_examples.py

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