chore: Copy jest config from pkgs/cheatsheet

Author: trillium

packages/test-case-component/jest.config.ts

@@ -0,0 +1,8 @@
+import type { Config } from "jest";
+
+const config: Config = {
+  preset: "ts-jest",
+  testEnvironment: "jsdom",
+};
+
+export default config;