added markdown notes for events

prisma/migrations/20250629122552_add_notes_to_events/migration.sql

@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "Event" ADD COLUMN     "notes" TEXT;

prisma/schema.prisma

@@ -33,6 +33,7 @@ model Event {
     creatorId   String
     guests      Guest[]
     eventGuests EventGuest[] 
+    notes       String?
     createdAt   DateTime @default(now())
 }