feat: Fortran support

[ianlewis]

Description:

Adds support for Fortran.

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 79.16%. Comparing base (29bf0bd) to head (0e292c7).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1490   +/-   ##
=======================================
  Coverage   79.16%   79.16%           
=======================================
  Files          15       15           
  Lines         907      907           
=======================================
  Hits          718      718           
  Misses        138      138           
  Partials       51       51