Add optional RSVP field to guest schema

This commit introduces an optional `rsvp` field to the guest-related types and schemas. The field is nullable and references the `RSVPSchema`, allowing better handling of RSVP data in the application.

frontend/src/client/schemas.gen.ts

@@ -2427,6 +2427,16 @@ export const GuestReadSchema = {
       type: "string",
       title: "Invitation Code",
     },
+    rsvp: {
+      anyOf: [
+        {
+          $ref: "#/components/schemas/RSVPSchema",
+        },
+        {
+          type: "null",
+        },
+      ],
+    },
   },
   type: "object",
   required: [

frontend/src/client/types.gen.ts

@@ -370,6 +370,7 @@ export type GuestRead = {
   actual_additional_guests: number;
   is_blocked: boolean;
   invitation_code: string;
+  rsvp?: RsvpSchema | null;
 };
 
 export type GuestStatus =