feat: Add plugin slots for progress page components (#1496)

src/data/hooks.ts

@@ -0,0 +1,5 @@
+import { useSelector } from 'react-redux';
+import { RootState } from '../store';
+
+// eslint-disable-next-line import/prefer-default-export
+export const useContextId = () => useSelector<RootState>(state => state.courseHome.courseId);