Ship collaborative text editor as an example app

[QuinnWilton]

Disclaimer

Rhizome is currently on hold to let Fission concentrate their efforts on other projects.
However, Rhizome is absolutely still crucial to Fission in the long term, and is an important advancement in and beyond the Local First space.

Description:

This milestone is part of the Fission Projects Roadmap.

ETA: 2024-05-03 - ON HOLD

Children:

• Support importing rules into a program #38
• Implement LWW-Registers in the standard library #46
• Implement Sequences in the standard library #47
• Implement dataflow runtime #66
• Implement differential trace data structures #67
• Compile from RAM to dataflow #68
• Expose WebAssembly bindings through a worker #73

Optional, but nice to have:

• Improve diagnostics context for errors regarding invalid programs #65
• Propagate and convert errors from Rust code to WebAssembly host #70
• Explore possible higher-level DSLs to expose through WebAssembly bindings #74

Note: This milestone is subject to change as priorities and circumstances evolve.