Improvements for version 1.1.0

[OliRom]

Here are the things that might be improved with the package version 1.1.0:

• Automate tasks with a Makefile in the root directory (Olivier). Those tasks might be automated:
  • Generate the documentation, which include generating the .svg images
  • Run the tests
  • Run the tests with coverage
  • Run isort and black (in this order)
  • Run the benchmarks
• Add benchmarks (Olivier). This includes:
  • Creating the benchmarks
  • Automating the benchmarks generation in the Makefile
• Implement unitary and size check with decorators (Implement unitary and size checks with a decorator #60 )
• Enhance the ring submodule (Enhance the ring submodule #44 )
• Automate tests and release with CI (Automate tests and releases with CI #72 )
• Add a developper section in the documentation (Add a "Developer" section in the documentation #64 )
• Add a section in the documentation containing the steps to follow to release a new version of the package (PyPi and ReadTheDocs)
• Update the README with a documentation link and the PyPi installation instructions (Update Readme with doc link and Pypi installation #59 )
• Add badges to the README (test coverage, link to PyPI, supported python versions, ...)
• Make sure the versions available on readthedocs are the right ones
• Automaticaly update the package version in the documentation and README files using the qdecomp.__version__ variable to avoid duplicate definition
• Reduce testing time (particularly the test_utils/test_grid_problem/test_rz_approx.py and tests\test_decompositions\test_circuit.py test_decompositions/test_sqg_decomp.py tests).