[ANDROID] [Feature] - Ability to change clickability of POI

[ebhsgit]

This PR introduce the ability to change whether POI is clickable.

If the developer does not want interactions with POI, currently, the plugin can only hide the POI by setting map styles.
This give the developer more flexibly on how to handle POI on their map.

Use case
Sometime tapping on Polyline does not register. This is due to the tap position being near a POI. The POI registers the clicking event instead of the Polyline.

Pull request guide

Thank you for considering to improve this cordova-plugin-googlemaps.

When you create a pull request, please make it to multiple_maps branch instead of master branch.

Because the multiple_maps branch is edge version.

Thank you for your understanding.

---

@wf9a5m75
master branch has changes that is ahead of multiple_maps branch. Creating a PR into multiple_maps will also bring these changes.

[wf9a5m75]

Since Google Maps JS v3 does not have the name of method setClickablePOI, I don't accept this style way.
The goal of this plugin is to reproduce the Google Maps JS v3 as much as possible.

I'm implementing mapOptions.preferences.clickableIcons option more better way. I will let you know the code is ready.

[wf9a5m75]

mapOptions.preferences.clickableIcons = true/false is now available on the multiple_maps branch code.

var map = plugin.google.maps.getMap('map_canvas', {
      'camera': {
         ...
      },
      'preferences': {
        'clickableIcons': false
      }
    });

map.on(plugin.google.maps.event.POI_CLICK, function() {
    console.log("poi_clicked");  // this code is not invited when `clickableIcons = false`
});

[ebhsgit]

Thanks mate

[wf9a5m75]

  public void onPoiClick(PointOfInterest pointOfInterest) {
    if (!this.clickableIcons) {
      this.onMapClick(pointOfInterest.latLng);
      return;
    }

[ebhsgit]

Yep. Noticed that after my previous comment :)