Move artifact graph creation into Rust

[jtran]

The artifact graph is a graph representing the output of a KCL program, where nodes of the graph are objects like planes, paths, extrusions, etc. and edges of the graph are the relationships between them, like this extrusion is a linear extrude of that path, and this path is on that plane. Currently, the artifact graph is generated in TS by intercepting the requests and responses of engine calls made by the KCL interpreter.

There are a few motivations for moving this to Rust.

1. It would continue to work without communicating with the engine (AKA mock execution) during sketch mode
2. We believe it would be easier to maintain in Rust

Drawbacks

1. More data will need to cross the WASM boundary. Contrast this with how it is now where TS code derives the information from the engine messages, which have to cross the boundary anyway in order to use the WebSocket.