Adding version checker, better error messages

[astronomerritt]

Fixes #983.

• Error messages in the sorchaArguments dataclass are now more informative and refer to the relevant command-line argument.
• Updated the unit test.

Fixes #981.

• Added back in Mario's code for a --version command line argument.

Review Checklist for Source Code Changes

• Does pip install still work?
• Have you written a unit test for any new functions?
• Do all the units tests run successfully?
• Does Sorcha run successfully on a test set of input files/databases?
• Have you used black on the files you have updated to confirm python programming style guide enforcement?

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 2 lines in your changes missing coverage. Please review.

Project coverage is 80.79%. Comparing base (abac8fe) to head (6423254).
Report is 2 commits behind head on main.

Files	Patch %	Lines
src/sorcha/utilities/sorchaArguments.py	66.66%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #991      +/-   ##
==========================================
- Coverage   80.83%   80.79%   -0.04%     
==========================================
  Files          69       69              
  Lines        3084     3083       -1     
==========================================
- Hits         2493     2491       -2     
- Misses        591      592       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[mschwamb]

It would be good for @mjuric to confirm the version stuff is okay. I think it is but a quickly double check would be helpful.