Added Observable -> ToMaybeIO extension

Author: MorleyDev

src/MorleyDev.Reactive.Monad/Extensions/ObservableExtensions.cs

@@ -7,5 +7,7 @@ public static class ObservableExtensions
 		public static IO<T> ToIO<T>(this IObservable<T> self) => IO<T>.From(self);
 
 		public static ManyIO<T> ToManyIO<T>(this IObservable<T> self) => ManyIO<T>.From(self);
+
+		public static MaybeIO<T> ToMaybeIO<T>(this IObservable<T> self) => MaybeIO.ToMaybeIO(self);
 	}
 }