[Feature Request]: A status-like view for exploring a changeset from a file perspective (i.e.: the files that were changed by this changeset)

[jraygauthier]

Basically identical as the existing status view but:

• A flat list of files just like those under "Changes to be committed".
  No "Changes to be committed", "Changes not staged for commit" or "Untracked files" sections .
• Purely read-only (at time time).
  Might however be a good starting point to eventually provide some append only fixup style capabilities (e.g.: add fixup commit, add reword commit, revert commit, etc.) and potentially even direct interactive mutation capabilities.
• Per file action:
  • Split view diff with previous changeset when hitting Enter on a file.
  • Blame view when hitting b
  • Etc, just like status per file actions.

Accessible from:

• The main view when hitting some TBD shortcut on a changeset (e.g.: x for explore).
• Potentially other views when hitting the same TBD shortcut. Potentially:
  • A value changeset's diff view.
  • A directory from the treeview of a specific changeset?