fix: Make language a list in evaluate app, added comments to evaluate description

[fasterinnerlooper]

No description provided.

[fasterinnerlooper]

Hey @k4black. There seems to be a filename conflict with building wheel during the CI build. Should it be overwritten or should it be skipped? https://github.com/k4black/codebleu/actions/runs/7736021887/job/21096507552

[k4black]

@fasterinnerlooper Thank you for the contribution! Just fixed github actions (hopefully). I've updated your branch, will check pipeline status in ~15m

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (a6e250e) 43.56% compared to head (4e0c18a) 43.56%.
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #25   +/-   ##
=======================================
  Coverage   43.56%   43.56%           
=======================================
  Files          11       11           
  Lines        1538     1538           
=======================================
  Hits          670      670           
  Misses        868      868           

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