Allow component selectors to be specified as strings with flexible matching

[jleibs]

What

• Resolves: Add automatic promotion of "Component" to "rerun.components.Component" #7629
• We also do this promotion for the ComponentLike in the view contents expression on the python side

This means you can now do:

view = self.recording.view(index="my_index", contents={"points": "position3D"}).select("position3d")

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[teh-cmc]

Hmmm, I guess that means we're going to intern a bunch of random strings indefinitely.

This is hardly a problem in practice, but might deserve a NOTE.

[jleibs]

Issue: #7699