Add support for android 12

Need to change pending intent flag

2022-03-16 14:04:48.410 11177-11177/com.sellnu.frekis E/Mbgl-Mapbox: Error occurred while initializing telemetry
java.lang.IllegalArgumentException: com.sellnu.frekis: Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be specified when creating a PendingIntent.
Strongly consider using FLAG_IMMUTABLE, only use FLAG_MUTABLE if some functionality depends on the PendingIntent being mutable, e.g. if it needs to be used with inline replies or bubbles.
at android.app.PendingIntent.checkFlags(PendingIntent.java:375)
at android.app.PendingIntent.getBroadcastAsUser(PendingIntent.java:645)
at android.app.PendingIntent.getBroadcast(PendingIntent.java:632)
at com.mapbox.android.telemetry.AlarmSchedulerFlusher.register(AlarmSchedulerFlusher.java:31)
at com.mapbox.android.telemetry.MapboxTelemetry.startAlarm(MapboxTelemetry.java:375)
at com.mapbox.android.telemetry.MapboxTelemetry.startTelemetry(MapboxTelemetry.java:369)
at com.mapbox.android.telemetry.MapboxTelemetry.enable(MapboxTelemetry.java:113)
at com.mapbox.mapboxsdk.module.telemetry.TelemetryImpl.(TelemetryImpl.java:33)
at com.mapbox.mapboxsdk.ModuleProviderImpl.obtainTelemetry(ModuleProviderImpl.java:22)
at com.mapbox.mapboxsdk.Mapbox.initializeTelemetry(Mapbox.java:167)
at com.mapbox.mapboxsdk.Mapbox.getInstance(Mapbox.java:64)
at com.sellnu.frekis.mapbox.MapBoxManager.(MapBoxManager.java:35)
at com.sellnu.frekis.mapbox.MapBoxManager.init(MapBoxManager.java:40)

Start with AlarmSchedulerFlusher.java at line 31, where the stack trace shows PendingIntent.getBroadcast failing on Android 12. Update the pending-intent flag handling for the reported API requirement, then run the relevant Android telemetry or plugin tests and confirm initialization succeeds when targeting Android 12.