Collapsible merge commits on commits panel

### Is your feature request related to a problem? Please describe.
Sometimes when i have a merge commit in between two commits in a feature branch, i have to scroll far down the commits to see the commits before the merge.

### Describe the solution you'd like
A collapsible merge commit would make it so that users can see below the huge merge commits easily.

### Additional context
Add any other context or screenshots about the feature request here.