add lightning hook

[klieret]

• ♻️ Remove tests from package
• ✨ Hook for pytorch lightning

[codecov-commenter]

Codecov Report

Merging #53 (3d41168) into main (ccf5693) will increase coverage by 0.54%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #53      +/-   ##
==========================================
+ Coverage   91.97%   92.51%   +0.54%     
==========================================
  Files           8        9       +1     
  Lines         137      147      +10     
  Branches       13       13              
==========================================
+ Hits          126      136      +10     
- Misses          5        6       +1     
+ Partials        6        5       -1     

Impacted Files	Coverage Δ
src/wandb_osh/lightning_hooks.py	100.00% <100.00%> (ø)

... and 2 files with indirect coverage changes