feat: add created_by_name field to Booking type

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

frontend/src/lib/types/booking.ts

@@ -106,6 +106,7 @@ export interface Booking {
 	created_at: string;
 	updated_at: string;
 	created_by?: string;
+	created_by_name?: string;
 
 	// Deposit fields
 	deposit_required: boolean;