Chaned Prisma shema due to Issue: #8

- Added Role model
- Added Roles to disciplinese and Participants

prisma/schema.prisma

@@ -52,12 +52,24 @@ model Discipline {
   name        String
   minTeamSize Int     @default(1)
   maxTeamSize Int     @default(1)
+  roles       Roles[]
 
   teams   Team[]
   event   Event  @relation(fields: [eventId], references: [id])
   eventId Int
 }
 
+model Roles {
+  id   Int    @id @default(autoincrement())
+  pid  String @unique @default(dbgenerated("gen_random_uuid()")) @db.Uuid
+  name String
+
+  roles         Participant @relation(fields: [participantId], references: [id])
+  discipline    Discipline? @relation(fields: [disciplineId], references: [id])
+  disciplineId  Int?
+  participantId Int
+}
+
 model Team {
   id   Int    @id @default(autoincrement())
   pid  String @unique @default(dbgenerated("gen_random_uuid()")) @db.Uuid
@@ -77,6 +89,7 @@ model Participant {
 
   team   Team    @relation(fields: [teamId], references: [id])
   teamId Int
+  Roles  Roles[]
 }
 
 model Oragnisation {