feat(test): add challenge 18 and 19 avout testing

apps/testing-input-output/tsconfig.app.json

@@ -0,0 +1,20 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "outDir": "../../dist/out-tsc",
+    "types": []
+  },
+  "files": ["src/main.ts"],
+  "include": ["src/**/*.d.ts"],
+  "exclude": [
+    "jest.config.ts",
+    "src/**/*.test.ts",
+    "src/**/*.spec.ts",
+    "cypress/**/*",
+    "cypress.config.ts",
+    "**/*.cy.ts",
+    "**/*.cy.js",
+    "**/*.cy.tsx",
+    "**/*.cy.jsx"
+  ]
+}