Chore/unit test (#538)

* chore: add unit test

* chore: add github action for unit test

packages/app/jest.config.js

@@ -0,0 +1,5 @@
+/** @type {import('ts-jest').JestConfigWithTsJest} */
+module.exports = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+};