[Feature]: show diff between commits

[FraYoshi]

Description

A great addition would be to have the ability to show the diff between commits, so we can see what a merge did, or what has been added/removed.

Describe the solution you'd like

I would like to press on the commit number and see what has changed between HEAD and pressed commit, a bit like it already happens here on GitHub. Would even be better if we could compare commits, but for the moment I would be happy with an HEAD and pressed :)

Describe alternatives you've considered

using a software like termux or emacs to check for the diffs.

[ViscousPot]

Working on this, but full disclosure it will take a while :)

Thanks for the suggestion!!