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/components/ui/servers/BackupSettingsModal.vue

@@ -56,11 +56,13 @@
 </template>
 
 <script setup lang="ts">
-import { ButtonStyled, NewModal } from "@modrinth/ui";
-import { XIcon, SaveIcon } from "@modrinth/assets";
-import { ref, computed } from "vue";
+import { SaveIcon, XIcon } from "@modrinth/assets";
+import { ButtonStyled, injectNotificationManager, NewModal } from "@modrinth/ui";
+import { computed, ref } from "vue";
 import { ModrinthServer } from "~/composables/servers/modrinth-servers.ts";
 
+const { addNotification } = injectNotificationManager();
+
 const props = defineProps<{
   server: ModrinthServer;
 }>();
@@ -110,7 +112,6 @@ const fetchSettings = async () => {
   } catch (error) {
     console.error("Error fetching backup settings:", error);
     addNotification({
-      group: "server",
       title: "Error",
       text: "Failed to load backup settings",
       type: "error",
@@ -135,7 +136,6 @@ const saveSettings = async () => {
     };
 
     addNotification({
-      group: "server",
       title: "Success",
       text: "Backup settings updated successfully",
       type: "success",
@@ -145,7 +145,6 @@ const saveSettings = async () => {
   } catch (error) {
     console.error("Error saving backup settings:", error);
     addNotification({
-      group: "server",
       title: "Error",
       text: "Failed to save backup settings",
       type: "error",