feat: add bank to branch payload (optional)

prisma/schema.prisma

@@ -217,6 +217,8 @@ model Branch {
   headOffice   Branch? @relation(name: "HeadOfficeRelation", fields: [headOfficeId], references: [id])
   headOfficeId String?
 
+  bank BranchBank[]
+
   status      Status @default(CREATED)
   statusOrder Int    @default(0)
 
@@ -236,6 +238,16 @@ model Branch {
   customerRegistration Customer[]
 }
 
+model BranchBank {
+  id            String @id @default(uuid())
+  bankName      String
+  accountName   String
+  accountNumber String
+
+  branch   Branch? @relation(fields: [branchId], references: [id])
+  branchId String?
+}
+
 model BranchContact {
   id          String @id @default(uuid())
   telephoneNo String