calculate coords based on container viewport position (#1955)

* feat: calculate coords based on parent left and top so it renders correctly in host App

* fix text

* move offsets to state & fix bugs

* fix text jumping

* account for zoom in textWysiwyg & undo incorrect offsetting

Co-authored-by: dwelle <luzar.david@gmail.com>

src/data/types.ts

@@ -6,5 +6,5 @@ export interface DataState {
   version?: string;
   source?: string;
   elements: readonly ExcalidrawElement[];
-  appState: AppState | null;
+  appState: MarkOptional<AppState, "offsetTop" | "offsetLeft"> | null;
 }