Add changed-files command

This release adds a new changed-files command to mepo. Essentially it will list all files that are different compared to the original tags/branches in the components.yaml (technically the mepo state, so if mepo save was run, the new components.yaml).

For example, if there are no changes:

❯ mepo compare
No repositories have changed
❯ mepo changed-files

Now we checkout a branch:

❯ mepo develop MAPL
Checking out development branch develop in MAPL
❯ mepo changed-files
./src/Shared/@MAPL/CHANGELOG.md
./src/Shared/@MAPL/generic/MAPL_Generic.F90

This shows that compared to where we started, we have two new files. Now let us alter a file and add a file:

❯ touch foo
❯ echo "bobob" >> src/Components/@GEOSgcm_GridComp/README.md
❯ mepo changed-files
./foo
./src/Shared/@MAPL/CHANGELOG.md
./src/Shared/@MAPL/generic/MAPL_Generic.F90
./src/Components/@GEOSgcm_GridComp/README.md

Finally, it has a --full-path option for a full path.

❯ mepo changed-files --full-path
/Users/mathomp4/Models/GEOSgcm-mepo-newfilesvorigin/GEOSgcm/foo
/Users/mathomp4/Models/GEOSgcm-mepo-newfilesvorigin/GEOSgcm/src/Shared/@MAPL/CHANGELOG.md
/Users/mathomp4/Models/GEOSgcm-mepo-newfilesvorigin/GEOSgcm/src/Shared/@MAPL/generic/MAPL_Generic.F90
/Users/mathomp4/Models/GEOSgcm-mepo-newfilesvorigin/GEOSgcm/src/Components/@GEOSgcm_GridComp/README.md

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From CHANGELOG.md

Added

• Add new changed-files command to list all changed files vs original state

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What's Changed

• Add ability to display changed files by @mathomp4 in #236
• GitFlow: Merge Develop into Main for release by @mathomp4 in #237

Full Changelog: v1.45.0...v1.46.0