feat(@angular-devkit/build-ng-packagr): update ng-packagr to version 4

Author: alan-agius4

packages/angular_devkit/build_ng_packagr/package.json

@@ -14,6 +14,6 @@
     "rxjs": "^6.0.0"
   },
   "peerDependencies": {
-    "ng-packagr": "^2.2.0 || ^3.0.0 || ^4.0.0-rc.0"
+    "ng-packagr": "^2.2.0 || ^3.0.0 || ^4.0.0"
   }
 }

tests/angular_devkit/build_ng_packagr/ng-packaged/projects/lib/tsconfig.lib.json

@@ -21,7 +21,8 @@
     "fullTemplateTypeCheck": true,
     "strictInjectionParameters": true,
     "flatModuleId": "AUTOGENERATED",
-    "flatModuleOutFile": "AUTOGENERATED"
+    "flatModuleOutFile": "AUTOGENERATED",
+    "enableResourceInlining": true
   },
   "exclude": [
     "src/test.ts",