Changes

Summary

1. Add missing features relating to premium app subscriptions (#2667) (commit: 92bcc32) (details)

Commit 92bcc32bc3cc36183ebd940ad46505fa380745cc by noreply Add missing features relating to premium app subscriptions (#2667) (commit: 92bcc32)
	src/main/java/net/dv8tion/jda/api/JDA.java (diff)
	src/main/java/net/dv8tion/jda/internal/requests/restaction/TestEntitlementCreateActionImpl.java
	src/main/java/net/dv8tion/jda/internal/JDAImpl.java (diff)
	src/main/java/net/dv8tion/jda/internal/entities/EntitlementImpl.java (diff)
	src/main/java/net/dv8tion/jda/api/entities/Entitlement.java (diff)
	src/main/java/net/dv8tion/jda/internal/entities/EntityBuilder.java (diff)
	src/main/java/net/dv8tion/jda/api/requests/Route.java (diff)
	src/main/java/net/dv8tion/jda/api/requests/restaction/TestEntitlementCreateAction.java