View a specific file version in the usual editors

[PVince81]

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Is your feature request related to a problem? Please describe.
When a file has multiple versions in the versions tab and a user wants to restore a specific one, it is currently impossible to know which one is the "correct" one or intended one. Well, one can download the file and view it locally, assuming that the user has a local viewer installed.

Describe the solution you'd like
Having the ability to view a version of a file directly in the browser using the Nextcloud viewers like the viewer app (photos, etc), PDF viewer, text editor, office, in read-only mode.

Describe alternatives you've considered
It's currently possible already to download a version as a workaround.

Additional context
Popped up while reviewing #35080

Extension
A possible extension of this would be to provide a "diff" view, but this would be much more complex as it requires to be able to select two versions to diff and also the viewers/editors need to support diffing in some way. There's a separate issue for that #30382

[juliusknorr]

Relevant viewer issue nextcloud/viewer#1469

[PVince81]

depends on the new view API #30070 (@skjnldsv fyi)

[AndyScherzinger]

resolved via the side-by-side comparison feature