[Android] ClickReceiver run when the app is background too

• Refactor AbstractClickReceiver class to extends from Service insteadof IntentService, and overrides onStartCommand method to return START_STICKY
• Added listeners static property to LocalNotification class, to execute fireEvent from Android native too
• Added a Activity example in android/app module, to run a JobService with the notification in background, to test the click in background

[Android] Added jitpack support

v0.9.0-beta.4

[Android] Added jitpack support

[Android] Added jitpack support

0.9.0-beta.7

[Android] Added jitpack support

[Android] Added jitpack support

0.9.0-beta.6

[Android] Added jitpack support

[Android] Added jitpack support

0.9.0-beta.5

[Android] Added jitpack support