Implement complete Graph View example

[grtlr]

What

This PR tries to create a more convincing example for the graph view.

It consists of 4 views:

• A tree that randomly grows over time
• A bubble chart with new bubbles coming in over time
• The lattice, which is logged statically but without positions
• And finally a Markov-Chain with fixed positions

There are still some minor things to fix:

• That one weird edge in the Markov-Chain
• It would be nice if the viewer would fit the resulting graphs to the view.

[github-actions]

Latest documentation preview deployed successfully.

Result	Commit	Link
✅	fa5809c	https://landing-ma10vfwy0-rerun.vercel.app/docs

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[github-actions]

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

• I have tested the web viewer

Result	Commit	Link	Manifest
✅	fa5809c	https://rerun.io/viewer/pr/8421	+nightly +main

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

[teh-cmc]

Looks great, works great.

Gotta figure out which examples stay and which ones go, and update the manifest accordingly.
If a Rust example stay, then please keep the Python counterpart too.

[teh-cmc]

I'm always suspicious when a check gets removed 😬. What's the reasoning here? (Reminder: people don't regularly go through all the examples; they do go through the entire checklist though).

[grtlr]

That one check used to be a special case for the graph view back when we didn't have the physics simulation fully set up.

Now that we have this that check it evolved into the full-featured example. The remaining graph check covers the more weird edge cases.