fix(generators/app/templates): missing types def build output

Author: phatpham9

generators/app/templates/tsconfig.json

@@ -3,8 +3,9 @@
     "moduleResolution": "node",
     "module": "es6",
     "target": "es5",
+    "rootDir": "src",
+    "outDir": "build",
     "declaration": true,
-    "declarationDir": "build",
     "esModuleInterop": true,
     "preserveConstEnums": true,
     "removeComments": true,