feat: introduce dependency injection framework (#4091)

* feat: migrate frontend notifications to dependency injection based notificaton manager

* fix: lint

* fix: issues

* fix: compile error + notif binding issue

* refactor: move org context to new DI setup

* feat: migrate app notifications to DI + frontend styling

* fix: sidebar issues

* fix: dont use delete in computed

* fix: import and prop issue

* refactor: move handleError to main notification manager class

* fix: lint & build

* fix: merge issues

* fix: lint issues

* fix: lint issues

---------

Signed-off-by: IMB11 <hendersoncal117@gmail.com>
Signed-off-by: Cal H. <hendersoncal117@gmail.com>

apps/frontend/src/composables/auth.js

@@ -1,3 +1,5 @@
+import { injectNotificationManager } from "@modrinth/ui";
+
 export const useAuth = async (oldToken = null) => {
   const auth = useState("auth", () => ({
     user: null,
@@ -128,9 +130,8 @@ export const removeAuthProvider = async (provider) => {
     });
     await useAuth(auth.value.token);
   } catch (err) {
-    const data = useNuxtApp();
-    data.$notify({
-      group: "main",
+    const { addNotification } = injectNotificationManager();
+    addNotification({
       title: "An error occurred",
       text: err.data.description,
       type: "error",