feat: Add support for TODOs in JavaDoc

[ianlewis]

Description:

Add support for JavaDoc/JSDoc/TSDoc comments that have a leading asterisk.

/**
 * Some comment.
 * TODO: Add some code here.
 */

Related Issues:

Fixes #517

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.
• Add a note in the CHANGELOG.md if applicable.
• Sign the Google CLA.

[codecov]

Codecov Report

Merging #579 (d6569e9) into main (cc90c56) will increase coverage by 0.01%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #579      +/-   ##
==========================================
+ Coverage   80.46%   80.48%   +0.01%     
==========================================
  Files          19       19              
  Lines        1121     1122       +1     
  Branches       14       14              
==========================================
+ Hits          902      903       +1     
  Misses        157      157              
  Partials       62       62              

Files Changed	Coverage Δ
internal/todos/todos.go	100.00% <100.00%> (ø)