Updated the instructions for compilation using cmake #319

	name: python_wrapper
	on: [push, pull_request]
	jobs:
	python_wrapper-build:
	runs-on: ubuntu-latest
	name: python_wrapper build

	steps:
	- uses: actions/checkout@v4

	# Python3 should be pre-installed on 'ubuntu-latest'
	- name: Python version info
	run: \|
	python --version
	pip --version

	- name: Install dependencies
	run: \|
	sudo apt-get update
	sudo apt-get install gfortran mpi-default-bin mpi-default-dev libhdf5-dev libfftw3-bin libfftw3-dev libopenblas-dev cmake ninja-build
	pip install numpy f90nml scikit-build scipy meson meson-python
	pip install f90wrap

	- name: Build python_wrapper
	run: \|
	pip install .

	- name: Test if installation is ok
	run: \|
	python -c "import spec; print('success')"

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