Documentation

[vetschn]

• [x] Make sure docstrings are consistent with actual parameters
• [x] Setup a gh pages deployment
• [x] Ensure that the environment.yml and requirements.txt are up-to-date and give correct, reproducible envs.
• [x] Copyright notices should be consistent

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 93.00000% with 7 lines in your changes missing coverage. Please review.

Project coverage is 85.18%. Comparing base (3fac381) to head (236afb7).

Files with missing lines	Patch %	Lines
src/qttools/__init__.py	72.72%	3 Missing :warning:
src/qttools/utils/mpi_utils.py	60.00%	2 Missing :warning:
src/qttools/utils/stack_utils.py	0.00%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## dev #54 +/- ## ========================================== + Coverage 84.80% 85.18% +0.38% ========================================== Files 29 29 Lines 1198 1195 -3 ========================================== + Hits 1016 1018 +2 + Misses 182 177 -5 ```

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[vetschn]

I construct a TypeAlias for NDArray in the top-level __init__.py now and switched all the method signatures to be using that instead of xp.ndarray (which is actually not even a proper TypeAlias). I'll check the consistency with the docstrings next.