[MRG] Dev extras

[gtdang]

This is a small PR to improve the classification & organization of extra dependencies. The key benefits to this change are:

1. Streamlines developer dependencies install
   • Contributors only need to run pip install -e '.[dev]', to get all the dependencies for joblib, GUI, test, docs generation.
2. Installation of dependencies for Github runners uses the dependencies specified by the setup file.
   • Prevents discrepancies between package versions specified in the setup file and workflow yml files
   • We don't have to remember to change dependency specifications in multiple files

Note:

• The mpi4py was left out of the dependency group because it was causing issues in tests when added to the parallel group. So developers will still need to manually install mpi4py and openmpi as recommended in the contributor guide.

To do:

• [ ] Test dev install with a fresh install on Mac and Windows

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (d3dd255) 91.35% compared to head (5df2214) 91.35%.

:exclamation: Current head 5df2214 differs from pull request most recent head 4657b5c. Consider uploading reports for the commit 4657b5c to get more accurate results

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #703 +/- ## ======================================= Coverage 91.35% 91.35% ======================================= Files 25 25 Lines 4606 4606 ======================================= Hits 4208 4208 Misses 398 398 ```

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[ntolley]

@gtdang this looks great!

Before I forget, you should add this to whats_new.rst, as well as #696 (under bug fix?)

[jasmainak]

@gtdang you should make a branch to your own fork, not to the main repo. For now it's okay, just remember to delete dev-extras branch after the pull request is merged.

[gtdang]

@gtdang this looks great!

Before I forget, you should add this to whats_new.rst, as well as #696 (under bug fix?)

Thanks! Updated with the whats_new.rst with PRs #695 #696 and the current #703

[jasmainak]

@gtdang I enabled auto-merge. Don't forget to delete the dev-extras branch once you are done since it's on upstream

Thanks a lot for your contributions 🙏 🥳