feat: menambahkan kolom slug dan implement slug di module project

prisma/schema.prisma

@@ -205,6 +205,7 @@ model User {
 model Project {
     id           Int           @id @default(autoincrement())
     id_admin     Int //mentor project
+    slug         String        @unique @db.VarChar(255)
     project_icon ProjectIcon   @default(code)
     project_name String        @db.VarChar(255)
     description  String        @db.Text
@@ -245,6 +246,7 @@ model ProjectMember {
 model Task {
     id              Int            @id @default(autoincrement())
     id_project      Int
+    slug            String         @db.VarChar(255)
     title           String         @db.VarChar(255)
     description     String         @db.Text
     deadline_at     DateTime
@@ -255,8 +257,10 @@ model Task {
     project     Project          @relation(fields: [id_project], references: [id], map: "task_id_project_foreign")
     submissions TaskSubmission[]
 
+    @@unique([id_project, slug])
     @@index([id_project], map: "task_id_project_foreign")
     @@index([deadline_at])
+    @@index([slug])
     @@map("task")
 }