Angular Cesium showcase update

Hello all :wave:

We just upgraded our Angular-Cesium example repository to Angular 18 and Cesium 1.119. The new codebase uses the modern Standalone API of the Angular framework. If you still use Angular modules and want to know how to integrate with Cesium, you can check out the ngmodules branch which uses an earlier version of the Angular framework (v16).

Developer-Plexscape/cesium-angular-example: An example application using Cesium with Angular. (github.com)