Make Rerun easy to learn directly from the viewer

[nikolausWest]

Goal

Just typing

pip install rerun-sdk
rerun

Should be an amazing entrypoint into learning about what Rerun is, how to use it, and gaining a productive mental model of how things fit together. Using the Rerun viewer should naturally teach you what you need without requiring you to read through documentation (although it might point you to documentation for learning more about something).

We'll achieve this both by including explanations, product tours, and examples right in the app, but also by making sure the design is consistent with the underlying data model such that using it naturaly builds useful intuition.

Roadmap

• More consistent visual language #2696
• Show open recordings in side view above blueprints #2298
• Consistent way to add/remove views and data to the blueprint in the UI #2697
• Interactive layout items in blueprint tree view #2652
• Display help content on the empty screen after startup #2513
• Consistent tooltips and hover cards #2701
• Fine grained ✨auto-viewport state and control #769
• Add UI element describing the state of the SDK connection #2118
• re_datastore: arrow table debug-view #404
• Add "browsing examples" section to the Welcome Screen #3096
• Visual onboarding product-tour #2699
• Transform graph view
• Export blueprint as code