feat: Add Elixir support

[ianlewis]

Description:

Add support for Elixir.

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 (a7c4472) to head (f842071).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1547   +/-   ##
=======================================
  Coverage   75.85%   75.85%           
=======================================
  Files          17       17           
  Lines        1147     1147           
=======================================
  Hits          870      870           
  Misses        201      201           
  Partials       76       76