Add HSF badge #153

	# Name of the workflow
	name: Clang-Format

	# Controls when the action will run. Triggers the workflow on push
	# except for the main and stable branches
	on:
	push:
	branches-ignore: [ main, stable ]

	# Defines the main job where we checkout our code, run clang-format
	# and commit changes
	jobs:
	clang-format:
	runs-on: ubuntu-latest
	steps:
	# Checks-out our repository under $GITHUB_WORKSPACE, so our job can access it
	- uses: actions/checkout@v2

	# Applies clang-format to all C/C++ files w/ the specified style
	- name: Apply clang-format
	id: formatting
	uses: HSF/clang-format-action@v0.4
	with:
	style: 'Google'

	# Gets and prints the output message
	- name: Get the output message
	run: echo "${{ steps.formatting.outputs.message }}"

Provide feedback