[IMP] documentation: move script to setup new branch in a dedicated file #3076

	# On each Pull request against branch documentation,
	# build documentation and check that the sphinx build works

	name: OpenUpgrade documentation

	on:
	pull_request:

	jobs:
	documentation:
	runs-on: ubuntu-latest
	steps:
	- name: Check out OpenUpgrade Documentation
	uses: actions/checkout@v2

	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: '3.10'
	- name: Requirements Installation
	run: \|
	pip install -r ./requirements.txt
	- name: Delete previously generated documentation
	run: \|
	rm -r ./docs/
	- name: Restore doc folder and .nojekill file
	run: \|
	mkdir ./docs/
	touch ./docs/.nojekyll
	- name: OpenUpgrade Docs
	run: \|
	# try to build the documentation
	sh ./build_openupgrade_docs

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