feat: add notification settings tab in organization settings for owners and admins

lib/api/notification-settings.ts

@@ -0,0 +1,22 @@
+/**
+ * @file Notification settings API client
+ */
+
+import apiRequest from './client'
+
+export interface NotificationSettingsResponse {
+  settings: Record<string, boolean>
+  categories: { id: string; label: string; description: string }[]
+}
+
+export async function getNotificationSettings(): Promise<NotificationSettingsResponse> {
+  return apiRequest<NotificationSettingsResponse>('/notification-settings')
+}
+
+export async function updateNotificationSettings(settings: Record<string, boolean>): Promise<void> {
+  return apiRequest<void>('/notification-settings', {
+    method: 'PATCH',
+    body: JSON.stringify({ settings }),
+    headers: { 'Content-Type': 'application/json' },
+  })
+}