New API for sending files without a recording stream

[Wumpf]

Related

• Related to #9303
  • This here is an easy more straight forward alternative

What

Often it's useful to open a file without creating a recording. In particular for...

• loading an rbl without yet setting up anything else
• loading an rrd
• oneshot visualization, i.e. anything you'd do with rerun <my file>

Today this requires creating a recording stream which always willl create a new recording that clutters the viewer.

Usage example:

viewer = rr.notebook.Viewer(width=1100, height=800, url=dataset.partition_url(first_episode))
viewer.send_file("droid.rbl")
viewer.display()

Note that in particular for the notebook this works without any existing sinks.

Draft:

• [ ] check with teammates if we want it in this form - interaction with existing sinks is a bit strange
• [ ] add example / test
• [ ] expose to regular python api, not just notebook?
• [ ] improve docs

[github-actions[bot]]

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

• [ ] I have tested the web viewer

Result	Commit	Link	Manifest
✅	57122c7	https://rerun.io/viewer/pr/9506	+nightly +main

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

[emilk]

We're going with https://github.com/rerun-io/rerun/pull/9804 instead for 0.23.1

[Wumpf]

shelving this indefinitely