feat: Fortran support

[ianlewis]

Description:

Adds support for Fortran.

Related Issues:

Updates #460

Checklist:

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

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

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

Additional details and impacted files

[](https://app.codecov.io/gh/ianlewis/todos/pull/1490?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Ian+Lewis) ```diff @@ Coverage Diff @@ ## main #1490 +/- ## ======================================= Coverage 79.16% 79.16% ======================================= Files 15 15 Lines 907 907 ======================================= Hits 718 718 Misses 138 138 Partials 51 51 ```