fix statistics page

prisma/schema.prisma

@@ -111,6 +111,7 @@ model Publisher {
   town           String?
   comments       String?
   reports        Report[]
+  Message        Message[]
 }
 
 model Availability {
@@ -223,6 +224,25 @@ model Report {
   @@map("Report")
 }
 
+//message types
+enum MessageType {
+  Email
+  SMS
+  Push
+  InApp
+}
+
+model Message {
+  id          Int         @id @default(autoincrement())
+  publisher   Publisher   @relation(fields: [publisherId], references: [id])
+  publisherId String
+  date        DateTime
+  content     String
+  isRead      Boolean     @default(false)
+  isPublic    Boolean     @default(false)
+  type        MessageType @default(Email)
+}
+
 //user auth and session management
 model User {
   id            String    @id @default(cuid())