Added getter for the field isComponentInitialized

This change is meanly because of https://github.com/mapbox/mapbox-gl-native/pull/14068 which is now throwing an exception when the component is not activated. This getter should help users to identify if the component is not activated yet to prevent usage and therefore exceptions.

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/LocationComponent.java

@@ -1509,4 +1509,13 @@ public final class LocationComponent {
       throw new LocationComponentNotInitializedException();
     }
   }
-}
+
+  /**
+   * Returns whether the location component is activated.
+   *
+   * @return true if the component is activated, false otherwise
+   */
+  public boolean isLocationComponentActivated() {
+    return isComponentInitialized;
+  }
+}