[WIP] Add workflow for benchmark run and docs build

[stes]

Fix#4

[n-poulsen]

Probably a small typo but should this be:

Suggested change

	- name: Set up Python 3.10
	uses: actions/setup-python@v2
	with:
	python-version: '3.9'
	- name: Set up Python 3.9
	uses: actions/setup-python@v2
	with:
	python-version: '3.9'