Rework the ToolState and integrate it into the Editor struct (#48)

* Rework the ToolState and integrate it into the Editor struct

* Add asset manager sources to docs outline

client/web/wasm/src/lib.rs

@@ -4,8 +4,13 @@ pub mod viewport;
 pub mod window;
 pub mod wrappers;
 
+use graphite_editor_core::Editor;
+use std::cell::RefCell;
 use wasm_bindgen::prelude::*;
 
+// the thread_local macro provides a way to initialize static variables with non-constant functions
+thread_local! {pub static EDITOR_STATE: RefCell<Editor> = RefCell::new(Editor::new())}
+
 #[wasm_bindgen(start)]
 pub fn init() {
 	utils::set_panic_hook();