add github actions for code format checking. #2


	name: Code_Format_Check

	# Controls when the workflow will run
	on:
	# Triggers the workflow on push or pull request events but only for the "master" branch
	push:
	branches: [ "master", "ros2" ]
	pull_request:
	branches: [ "master", "ros2" ]

	# Allows you to run this workflow manually from the Actions tab
	workflow_dispatch:

	# A workflow run is made up of one or more jobs that can run sequentially or in parallel
	jobs:
	# Removed the old artifacts
	remove-old-artifacts:
	runs-on: ubuntu-22.04
	timeout-minutes: 10
	steps:
	- name: Remove old artifacts
	uses: c-hive/gha-remove-artifacts@v1
	with:
	age: '15 days'
	pre-commit:
	# The type of runner that the job will run on
	runs-on: ubuntu-22.04
	# Steps represent a sequence of tasks that will be executed as part of the job
	steps:
	# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
	- uses: actions/checkout@v3
	# Runs a set of commands using the runners shell
	- name: code_format_check
	run: \|
	sudo apt-get install clang-format -y
	find . -name '.h' -or -name '.hpp' -or -name '*.cpp' \| xargs clang-format -i -style=file
	git diff --exit-code

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