Integrate vscode multi-file diff in single editor view from VSCode native Source Control Graph

[JustinGrote]

Describe the feature that you'd like
Newer versions of vscode have a source control graph which, while significantly inferior to Git Graph 🙂, does have a very cool feature where when you click on a commit you can get a single-pane summary of the commit details

I would imagine this API to create this view is probably exposed somewhere in vscode.d.ts, so if git graph could have a similar button, that would be extremely helpful.