build(example app): do not skip lib check in example app to discover issues with the typing of the library + update the example app to the latest version of the library

Author: MrWolfZ

example-app/package-lock.json

@@ -28,7 +28,7 @@
     "@ngrx/store-devtools": "6.0.1",
     "@types/prismjs": "1.9.0",
     "core-js": "2.5.4",
-    "ngrx-forms": "file:../ngrx-forms-3.0.0-0.tgz",
+    "ngrx-forms": "file:../ngrx-forms-3.0.0.tgz",
     "prismjs": "1.13.0",
     "rxjs": "6.2.2",
     "zone.js": "0.8.25"

example-app/package.json

@@ -12,7 +12,7 @@
     "strictPropertyInitialization": false,
     "noUnusedParameters": true,
     "noUnusedLocals": true,
-    "skipLibCheck": true,
+    "skipLibCheck": false,
     "target": "es5",
     "typeRoots": [
       "node_modules/@types"