Ahead/behind information in mepo status

• If you are working on a shared development branch and run a mepo fetch, the status will now show you if you are behind and/or ahead of that branch. For example:

GEOSgcm_GridComp       | (b) feature/new-science [behind: 1] [ahead: 1]

• Added blobless: option to components.yaml to force blobless cloning for a repo

From CHANGELOG.md

Added

• Added ahead/behind info to mepo status
• Added blobless: option to components.yaml to force blobless cloning for a repo

Changed

• Moved coloring of git status output from src/mepo/git.py to src/mepo/command/status/py
• Streamlined output processing of git status
• Migrated mepo management from rye to uv

Full Changelog: https://github.com/GEOS-ESM/mepo/compare/v2.3.2...v2.4.0