Emit AppEvent when opening Catalog and changing Catalog Category (#5071)

* Emit AppEvent when opening Catalog and changing Catalog Category.

Signed-off-by: Panu Horsmalahti <phorsmalahti@mirantis.com>

* Add getName method to CatalogCategory

Signed-off-by: Panu Horsmalahti <phorsmalahti@mirantis.com>

src/common/catalog/catalog-entity.ts

@@ -173,6 +173,13 @@ export abstract class CatalogCategory extends (EventEmitter as new () => TypedEm
     return `${this.spec.group}/${this.spec.names.kind}`;
   }
 
+  /**
+   * Get the name of this category
+   */
+  public getName(): string {
+    return this.metadata.name;
+  }
+
   /**
    * Add a filter for menu items of catalogAddMenu
    * @param fn The function that should return a truthy value if that menu item should be displayed