Add npm script to automate the tsc build for PRs on CI (#4599)

* Add npm run ci to automate some ci stuff

* Inlude node types for node_tests

tsconfig.json

@@ -23,5 +23,11 @@
         "tns-core-modules/references.d.ts",
         "tns-platform-declarations/ios/objc-x86_64/",
         "node-tests/"
-    ]
+    ],
+    "compilerOptions": {
+        "baseUrl": ".",
+        "paths": {
+            "tns-core-modules/*": ["tns-core-modules/*"]
+        }
+    }
 }