Add possibility to configure GitHubClient timeout (#963) (#1693)

* Add possibility to configure GitHubClient timeout (#963)

A first attempt to fix the problem describe in #963 by adding a possibility
to extend the default timeout value (100s)
that is too short to be able to post assets in github release.

* Rename to SetRequestTimeout
Make comments consistent

Octokit/Http/Connection.cs

@@ -752,5 +752,14 @@ namespace Octokit
 
             return _versionInformation;
         }
+
+        /// <summary>
+        /// Set the GitHub Api request timeout.
+        /// </summary>
+        /// <param name="timeout">The Timeout value</param>
+        public void SetRequestTimeout(TimeSpan timeout)
+        {
+            _httpClient.SetRequestTimeout(timeout);
+        }
     }
 }

Octokit/Http/HttpClientAdapter.cs

@@ -264,6 +264,15 @@ namespace Octokit.Internal
 
             return newRequest;
         }
+
+        /// <summary>
+        /// Set the GitHub Api request timeout.
+        /// </summary>
+        /// <param name="timeout">The Timeout value</param>
+        public void SetRequestTimeout(TimeSpan timeout)
+        {
+            _http.Timeout = timeout;
+        }
     }
 
     internal class RedirectHandler : DelegatingHandler

Octokit/Http/IConnection.cs

@@ -292,5 +292,11 @@ namespace Octokit
         /// the default <see cref="InMemoryCredentialStore"/> with just these credentials.
         /// </remarks>
         Credentials Credentials { get; set; }
+
+        /// <summary>
+        /// Set the GitHub Api request timeout.
+        /// </summary>
+        /// <param name="timeout">The Timeout value</param>
+        void SetRequestTimeout(TimeSpan timeout);
     }
 }

Octokit/Http/IHttpClient.cs

@@ -19,5 +19,12 @@ namespace Octokit.Internal
         /// <param name="cancellationToken">Used to cancel the request</param>
         /// <returns>A <see cref="Task" /> of <see cref="IResponse"/></returns>
         Task<IResponse> Send(IRequest request, CancellationToken cancellationToken);
+
+
+        /// <summary>
+        /// Set the GitHub Api request timeout.
+        /// </summary>
+        /// <param name="timeout">The Timeout value</param>
+        void SetRequestTimeout(TimeSpan timeout);
     }
 }