refactor: generate supported languages

[ianlewis]

Description:

Generate Go code for the languages configuration.

Related Issues:

Updates #460

Checklist:

• Review the CONTRIBUTING.md documentation.
• Add a reference to a related issue in the repository.
• Add a description of the changes proposed in the pull request.
• Add unit tests if applicable.
• Update documentation if applicable.
• Add a note in the CHANGELOG.md if applicable.
• Sign the Google CLA.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.85%. Comparing base (3473c73) to head (328e798).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1544      +/-   ##
==========================================
- Coverage   76.15%   75.85%   -0.31%     
==========================================
  Files          17       17              
  Lines        1191     1147      -44     
==========================================
- Hits          907      870      -37     
+ Misses        206      201       -5     
+ Partials       78       76       -2     

Files	Coverage Δ
internal/scanner/escape.go	100.00% <100.00%> (ø)
internal/scanner/scanner.go	71.07% <100.00%> (-2.08%)	⬇️
internal/todos/todos.go	99.18% <100.00%> (ø)
internal/vendoring/vendoring.go	100.00% <100.00%> (ø)