plugins/bui-themer: rename to mui-to-bui

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

packages/app/src/App.tsx

@@ -73,7 +73,7 @@ import {
 } from '@backstage/plugin-notifications';
 import { CustomizableHomePage } from './components/home/CustomizableHomePage';
 import { HomePage } from './components/home/HomePage';
-import { BuiThemerPage } from '@backstage/plugin-bui-themer';
+import { BuiThemerPage } from '@backstage/plugin-mui-to-bui';
 
 const app = createApp({
   apis,
@@ -209,7 +209,7 @@ const routes = (
       {customDevToolsPage}
     </Route>
     <Route path="/notifications" element={<NotificationsPage />} />
-    <Route path="/bui-themer" element={<BuiThemerPage />} />
+    <Route path="/mui-to-bui" element={<BuiThemerPage />} />
   </FlatRoutes>
 );