Migrate scheduled tasks to React (#6506)

* Migrate scheduled tasks to React

* Adjust margins

* Use localeCompare

* Clean up imports

* Use legacy apiclient from useApi

* Fix import

* Fix nested typography

* Add polling fallback

* Cleanup code

* Rename to tasks

* Rename to Component

* Use constants for websocket events

* Use memo to fix timestamp rerender on run

src/apps/dashboard/features/scheduledtasks/utils/tasks.ts

@@ -0,0 +1,27 @@
+import type { TaskInfo } from '@jellyfin/sdk/lib/generated-client/models/task-info';
+
+export function getCategories(tasks: TaskInfo[] | undefined) {
+    if (!tasks) return [];
+
+    const categories: string[] = [];
+
+    for (const task of tasks) {
+        if (task.Category && !categories.includes(task.Category)) {
+            categories.push(task.Category);
+        }
+    }
+
+    return categories.sort((a, b) => a.localeCompare(b));
+}
+
+export function getTasksByCategory(tasks: TaskInfo[] | undefined, category: string) {
+    if (!tasks) return [];
+
+    return tasks.filter(task => task.Category == category).sort((a, b) => {
+        if (a.Name && b.Name) {
+            return a.Name?.localeCompare(b.Name);
+        } else {
+            return 0;
+        }
+    });
+}