[Idea] Generate a state transition graph in compile time

[xiaozhikang0916]

Since we have defined the state machine in DSL, it would be nice to have a tool to produce a graph describing how the state is moved from one to another, for quick debugging and documentation.

An implementation can be a gradle ksp plugin, collecting state machine data from AST and print PlantUML syntex.

[gabrielittner]

This would be really nice to have, I've also thought about it before. An alternative approach (or additional) can also be something like http4k does https://www.http4k.org/guide/howto/self_document_systems_with_tests/ For that we'd need a runtime trace mode that would collect anything happening in the state machine so that you can use that for tests or debugging.

[tigerxy]

PlantUML would be really nice! 👍