0.3.0

• updated Android Gradle plugin to 7.0.0
• updated dependencies (Kotlin 1.5.21, Coroutines 1.5.1, RxRelay 3.0.1, Firebase BoM 28.3.0, play-services-auth 19.2.0)
• #14 add TileProviderFactory
• #15 add resource prefix to MapFragment layout
• #16 #17 provide empty fragment constructor for MapFragment