Rename Graphene crate structure

[Keavon]

• /node-graph/libraries -> /node-catalog/types
• /node-graph/nodes -> /node-catalog/nodes
• /node-graph -> /graphene
• /node-graph/graph-craft -> /graphene/compiler
• /node-graph/graphene-cli -> /graphene-cli
• /node-graph/interpreted-executor -> /graphene/interpreter
• /node-graph/node-macro -> /graphene/macros
  • Call this crate graphene-macros
  • Use a prelude to turn #[node_macro::node(...)] into #[node(...)]
• /proc-macros -> split apart into:
  • /editor/macros (message system)
    • Call this crate editor-macros
  • /graphene/macros (widget builder)
• /frontend/wasm -> /frontend/wrapper

Also: update the special casing and terminology in /tools/crate-hierarchy-viz code.