feat: Nambahin template certificate endpoint

prisma/migrations/20260624152325_add_certificate_template/migration.sql

@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE `project` ADD COLUMN `certificate_template` TEXT NULL;

prisma/schema.prisma

@@ -212,6 +212,7 @@ model Project {
     start_date   DateTime      @db.Date
     end_date     DateTime      @db.Date
     status       ProjectStatus @default(active)
+    certificate_template String? @db.Text
     created_at   DateTime      @default(now())
     updated_at   DateTime      @updatedAt