feat(schema): add expectedOutput field to Testcase model

prisma/migrations/20250410021857_add_expected_output_to_testcase/migration.sql

@@ -0,0 +1,8 @@
+/*
+  Warnings:
+
+  - Added the required column `expectedOutput` to the `Testcase` table without a default value. This is not possible if the table is not empty.
+
+*/
+-- AlterTable
+ALTER TABLE "Testcase" ADD COLUMN     "expectedOutput" TEXT NOT NULL;