Changes

Summary

1. Make Widget an interface and move it to it's own file (#2295) (commit: 525faae) (details)

Commit 525faae57fcd07290cb7f1d563e601d9e00a366f by noreply Make Widget an interface and move it to it's own file (#2295) (commit: 525faae)
	src/main/java/net/dv8tion/jda/api/entities/Widget.java
	src/main/java/net/dv8tion/jda/api/utils/WidgetUtil.java (diff)
	src/main/java/net/dv8tion/jda/api/utils/package-info.java (diff)
	src/main/java/net/dv8tion/jda/internal/entities/WidgetImpl.java