Update examples. (#488)

Changes from MRs:
#480
#477

Relates-To: OLPEDGE-2622

Signed-off-by: Oleksii Zubko <ext-oleksii.zubko@here.com>

Author: OleksiiZubko

examples/nodejs-example/getOlpClientSettings.ts

@@ -18,7 +18,7 @@
  */
 
 import { UserAuth } from "@here/olp-sdk-authentication";
-import { OlpClientSettings } from "@here/olp-sdk-dataservice-read";
+import { OlpClientSettings } from "@here/olp-sdk-core";
 
 /**
  * Gets the `OlpClientSettings` instance.

examples/react-app-example/package.json

@@ -13,6 +13,7 @@
     "@types/react-router-dom": "^5.1.6",
     "react": "^17.0.1",
     "react-dom": "^17.0.1",
+    "react-scripts": "^4.0.3",
     "react-router-dom": "^5.2.0",
     "typescript": "^4.0.3"
   },