added use extension for eitherasync

Author: fw2568

src/Dbosoft.Functional/UseExtensions.cs

@@ -9,6 +9,12 @@ namespace LanguageExt
 {
     public static class UseExtensions
     {
+        public static EitherAsync<L, R2> Use<L, R1, R2>(this EitherAsync<L, R1> self, Func<EitherAsync<L, R1>, EitherAsync<L, R2>> map) where R1 : IDisposable
+        {
+            var res = self.Bind(f => use(f, f1 => map(self)));
+            return res;
+        }
+
         public static Task<Either<L, R2>> Use<L, R1, R2>(this Task<Either<L, R1>> self, Func<Task<Either<L, R1>>, Task<Either<L, R2>>> map) where R1 : IDisposable
         {
             var res = self.BindAsync(f => use(f, f1 => map(self)));