Implement IndexedDB document auto-save (#422)

* removed all use of document indicies

* -add u64 support for wasm bridge

* fixed rust formating

* Cleaned up FrontendDocumentState in js-messages

* Tiny tweaks from code review

* - moved more of closeDocumentWithConfirmation to rust
- updated serde_wasm_bindgen to add feature flag

* working initial auto save impl

* auto save is a lifetime file

* - cargo fmt
- fixc error message
- move document version constant

* code review round 1

* generate seed for uuid in js when wasm is initialized

* Resolve PR feedback

* Further address PR feedback

* Fix failing test

Co-authored-by: Keavon Chambers <keavon@keavon.com>
Co-authored-by: otdavies <oliver@psyfer.io>

editor/src/tool/tools/eyedropper.rs

@@ -62,8 +62,8 @@ impl Fsm for EyedropperToolFsmState {
 		self,
 		event: ToolMessage,
 		document: &DocumentMessageHandler,
-		tool_data: &DocumentToolData,
-		data: &mut Self::ToolData,
+		_tool_data: &DocumentToolData,
+		_data: &mut Self::ToolData,
 		input: &InputPreprocessor,
 		responses: &mut VecDeque<Message>,
 	) -> Self {