Improve project setup and CI

[mickvangelderen]

Add ruff and pyright configuration
Move dev dependencies from optional dependencies to development dependencies section
Fix some lints
Remove working-directory key from action steps so config gets picked up
Ensure only the necessary packages are installed by uv by issuing uv sync before each unit test group

[codecov]

Codecov Report

Attention: Patch coverage is 94.20290% with 8 lines in your changes missing coverage. Please review.

Project coverage is 93.68%. Comparing base (eb1e8e0) to head (569bc5f).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/jax_loop_utils/metric_writers/async_writer.py	50.00%	2 Missing ⚠️
...p_utils/metric_writers/torch/tensorboard_writer.py	33.33%	2 Missing ⚠️
src/jax_loop_utils/internal/flax/struct.py	75.00%	1 Missing ⚠️
...jax_loop_utils/metric_writers/tf/summary_writer.py	0.00%	1 Missing ⚠️
src/jax_loop_utils/parameter_overview.py	90.00%	1 Missing ⚠️
src/jax_loop_utils/periodic_actions.py	92.85%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #21      +/-   ##
==========================================
- Coverage   93.69%   93.68%   -0.02%     
==========================================
  Files          45       45              
  Lines        2728     2723       -5     
==========================================
- Hits         2556     2551       -5     
  Misses        172      172              

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

[garymm]

Thanks!