annoucement banners, calendar pdf export, vehicle booking quck-add, even quick-add

frontend/src/types/banner.types.ts

@@ -0,0 +1,10 @@
+export type BannerLevel = 'info' | 'important' | 'critical';
+
+export interface Banner {
+  id: string;
+  message: string;
+  level: BannerLevel;
+  starts_at: string;
+  ends_at: string | null;
+  created_at: string;
+}