feature: version one notification feature implemented.

frontend/src/types/notifications.ts

@@ -0,0 +1,25 @@
+export type UserNotificationType =
+  | 'CASE_SENT'
+  | 'CLINIC_COMMENT'
+  | 'LAB_COMMENT'
+  | 'LAB_COMMENT_CLINIC'
+  | 'CASE_IMPORTANT'
+  | 'TASK_COMPLETED'
+  | 'TASK_ASSIGNED'
+  | 'CONNECTION_REQUEST'
+  | 'STAFF_INVITE';
+
+export type UserNotificationItem = {
+  id: string;
+  type: UserNotificationType;
+  href: string;
+  payload: Record<string, unknown> | null;
+  readAt: string | null;
+  createdAt: string;
+  actorUserId: string | null;
+};
+
+export type InboxPage = {
+  items: UserNotificationItem[];
+  nextCursor: string | null;
+};