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/pages/admin/user_email.vue

@@ -32,8 +32,10 @@
   </div>
 </template>
 <script setup lang="ts">
-import { ButtonStyled } from "@modrinth/ui";
 import { MailIcon } from "@modrinth/assets";
+import { ButtonStyled, injectNotificationManager } from "@modrinth/ui";
+
+const { addNotification } = injectNotificationManager();
 
 const userEmail = ref("");
 
@@ -50,7 +52,6 @@ async function getUserFromEmail() {
   } catch (err) {
     console.error(err);
     addNotification({
-      group: "main",
       title: "An error occurred",
       text: err.data.description,
       type: "error",