Introduce RecordingUri component

[abey79]

What

This PR introduces a new RecordingUri component (which contains just a string) and assorted UI, which present the URI as a link that opens said component. Also introduce a new FileSource::Uri to account for this new way of opening recordings.

Note: displaying links is disabled in wasm build, because DataSource::from_uri() is not available there. I'm actually not quite sure what the story is to load remote recordings from the web viewer 🤷🏻

[github-actions]

Web viewer built successfully. If applicable, you should also test it:

• I have tested the web viewer

Result	Commit	Link
✅	5c53182	https://rerun.io/viewer/pr/8210

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[github-actions]

Latest documentation preview deployed successfully.

Result	Commit	Link
✅	5c53182	https://landing-dy33wq5dl-rerun.vercel.app/docs

^{Note: This comment is updated whenever you push a commit.}

[Wumpf]

screenshot? :)