refactor(redux): migrate to RTK2 store definition

Signed-off-by: Erik Michelson <github@erik.michelson.eu>

frontend/src/redux/index.ts

@@ -4,13 +4,28 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 import { isDevMode } from '../utils/test-modes'
-import type { ApplicationState } from './application-state'
-import { allReducers } from './reducers'
 import { configureStore } from '@reduxjs/toolkit'
+import { darkModeReducer } from './dark-mode/slice'
+import { editorConfigReducer } from './editor-config/slice'
+import { userReducer } from './user/slice'
+import { rendererStatusReducer } from './renderer-status/slice'
+import { realtimeStatusReducer } from './realtime/slice'
+import { historyReducer } from './history/slice'
+import { noteDetailsReducer } from './note-details/slice'
 
 export const store = configureStore({
-  reducer: allReducers,
+  reducer: {
+    darkMode: darkModeReducer,
+    editorConfig: editorConfigReducer,
+    user: userReducer,
+    rendererStatus: rendererStatusReducer,
+    realtimeStatus: realtimeStatusReducer,
+    history: historyReducer,
+    noteDetails: noteDetailsReducer
+  },
   devTools: isDevMode
 })
 
+export type ApplicationState = ReturnType<typeof store.getState>
+
 export const getGlobalState = (): ApplicationState => store.getState()