[core] further refactoring registration receiver. #1323

	name: Auto approve

	on:
	pull_request:
	types: [ labeled, opened, synchronize, reopened ]

	jobs:

	auto-approve:
	runs-on: ubuntu-latest
	permissions:
	pull-requests: write

	if: ${{ contains(github.event.pull_request.labels.*.name, 'Auto Approve') }}

	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	submodules: 'false'
	fetch-depth: 0

	- name: Check for changed files that are probably public API
	id: protected-files-changes
	uses: tj-actions/changed-files@v41
	with:
	files: \|
	app/app_pb/**
	contrib//include/
	contrib/ecaltime/ecaltime_pb/**
	ecal/core/cfg/**
	ecal/core/include/**
	ecal/core_pb/**
	ecal/pb/**
	lang/**
	thirdparty/**
	.gitmodules

	- name: Public API has changed?
	if: steps.protected-files-changes.outputs.any_changed == 'true'
	run: \|
	echo "ERROR: Protected files have been changed:"
	echo "${{ steps.protected-files-changes.outputs.all_changed_files }}"
	exit 1

	- uses: hmarr/auto-approve-action@v4
	if: steps.protected-files-changes.outputs.any_changed == 'false'
	with:
	github-token: ${{ secrets.GITHUB_TOKEN }}

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