Add ruff formating, support numpy 2

[steven-murray]

This adds ruff formatting, and also fixes support for numpy 2.0 (except that it depends on pyuvdata which is not compatible yet).

[codecov]

Codecov Report

Attention: Patch coverage is 95.77465% with 3 lines in your changes missing coverage. Please review.

Project coverage is 98.59%. Comparing base (2a7e64e) to head (ea138c8).
Report is 61 commits behind head on main.

Files with missing lines	Patch %	Lines
src/py21cmsense/observation.py	88.88%	1 Missing ⚠️
src/py21cmsense/observatory.py	92.30%	1 Missing ⚠️
src/py21cmsense/sensitivity.py	95.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #126      +/-   ##
==========================================
- Coverage   98.61%   98.59%   -0.02%     
==========================================
  Files          15       15              
  Lines        1081     1066      -15     
==========================================
- Hits         1066     1051      -15     
  Misses         15       15              

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

[mkolopanis]

Looks pretty good, I have one small question. Beyond that, it's apparently upset about 3 lines not being covered 😆

[mkolopanis]

🦮