* Generate the MVP node catalog in the manual (with some placeholders)
* Implement nearly the rest of everything
* Move to the tools directory and make it generate nicer default values
* Add category descriptions
* Organize file structure and improve type naming
* Improve book table of contents code
* Add collapsing chapter navigation to the book template
* Add to build workflow
* Clean up site structure
- Move message handler payload data into structs
- Organize the file structure used by `editor/src/messages/portfolio/document` `/node_graph` and `/graph_operation`
- Make derive attributes use `serde::Serialize, serde::Deserialize` consistently instead of `use serde::{Deserialize, Serialize};` imports
- Various other code cleanup and refactoring