repo: Add a --commits option

Show commits for a branch in a similar format
to ostree log. We also show static deltas when
they are available.

Closes: #2156
Approved by: alexlarsson
This commit is contained in:
Internal Server Error - Gitea: Git with a cup of tea
500 Internal Server Error

Gitea Version: 1.28.0+dev-477-g8b6ad49a5f