basic Socket.io implementation of collaborative editing (#879)

* Enable collaborative syncing for elements

* Don't fall back to local storage if using a room, as that is confusing

* Use remote socket server

* Send updates to new users when they join

* ~

* add mouse tracking

* enable collaboration, rooms, and mouse tracking

* fix syncing bugs and add a button to start syncing mid session

* enable collaboration, rooms, and mouse tracking

* fix syncing bugs and add a button to start syncing mid session

* Add Live button and app state to support tracking collaborator counts

* Enable collaborative syncing for elements

* add mouse tracking

* enable collaboration, rooms, and mouse tracking

* fix syncing bugs and add a button to start syncing mid session

* fix syncing bugs and add a button to start syncing mid session

* Add Live button and app state to support tracking collaborator counts

* prettier

* Fix bug with remote pointers not changing on scroll

* Enable collaborative syncing for elements

* add mouse tracking

* enable collaboration, rooms, and mouse tracking

* fix syncing bugs and add a button to start syncing mid session

* enable collaboration, rooms, and mouse tracking

* fix syncing bugs and add a button to start syncing mid session

* Add Live button and app state to support tracking collaborator counts

* enable collaboration, rooms, and mouse tracking

* fix syncing bugs and add a button to start syncing mid session

* fix syncing bugs and add a button to start syncing mid session

* Fix bug with remote pointers not changing on scroll

* remove UI for collaboration

* remove link

* clean up lingering unused UI

* set random IV passed per encrypted message, reduce room id length, refactored socket broadcasting API, rename room_id to room, removed throttling of pointer movement

* fix package.json conflict

src/data/localStorage.ts

@@ -34,6 +34,9 @@ export function restoreFromLocalStorage() {
   if (savedState) {
     try {
       appState = JSON.parse(savedState) as AppState;
+      // If we're retrieving from local storage, we should not be collaborating
+      appState.isCollaborating = false;
+      appState.collaboratorCount = 0;
     } catch {
       // Do nothing because appState is already null
     }