Copyright info, sphinx documentation, readme #202

	name: CI
	on:
	push:
	branches:
	- main
	pull_request:

	defaults:
	run:
	shell: bash -l {0}

	jobs:
	style:
	runs-on: ubuntu-22.04
	container:
	image: dolfinx/dolfinx:v0.8.0
	options: --privileged
	name: CI test

	steps:
	- name: Checkout code
	uses: actions/checkout@v2

	- name: ruff file checks
	run: \|
	pip install ruff && ruff check . && ruff format --check .

	- name: multivector testing
	run: \|
	cd ./hippylibX/test &&
	mpirun -n 2 python3 test_multivector.py

	- name: eigendecomposition testing
	run: \|
	cd ./hippylibX/test &&
	mpirun -n 2 python3 test_eigendecomposition.py

	- name: low rank Hessian testing
	run: \|
	cd ./hippylibX/test &&
	mpirun -n 2 python3 test_lowRankHessian.py

	- name: low rank Hessian preconditioner testing
	run: \|
	cd ./hippylibX/test &&
	mpirun -n 2 python3 test_lowRankHessian_preconditioner.py

	- name: sample testing
	run: \|
	cd ./hippylibX/test &&
	mpirun -n 2 python3 test_sampling.py

	- name: run serial check
	run: \|
	cd ./hippylibX/test &&
	mpirun -n 1 python3 test_model.py

	- name: run parallel check
	run: \|
	cd ./hippylibX/test &&
	mpirun -n 2 python3 test_model.py

Provide feedback