Convert app state to zustand stores

frontend/src/Store/Selectors/createDimensionsSelector.ts

@@ -1,13 +1 @@
-import { createSelector } from 'reselect';
-import AppState from 'App/State/AppState';
-
-function createDimensionsSelector() {
-  return createSelector(
-    (state: AppState) => state.app.dimensions,
-    (dimensions) => {
-      return dimensions;
-    }
-  );
-}
-
-export default createDimensionsSelector;
+// This file has been removed - use useAppDimensions or useAppDimension from App/appStore instead