feat: support LCCloud.Run<T>

Common/Common/Json/LCJsonConverter.cs

@@ -28,6 +28,9 @@ namespace LeanCloud.Common {
                     return Convert.ToInt32(reader.Value);
                 }
             }
+            if (reader.TokenType == JsonToken.Float) {
+                return Convert.ToSingle(reader.Value);
+            }
 
             return serializer.Deserialize(reader);
         }

Storage/Storage.Test/CloudTest.cs

@@ -28,6 +28,15 @@ namespace Storage.Test {
             Assert.AreEqual(response["result"], "Hello, world!");
         }
 
+        [Test]
+        public async Task RunAverageScore() {
+            float score = await LCCloud.Run<float>("averageStars", new Dictionary<string, object> {
+                { "movie", "夏洛特烦恼" }
+            });
+            TestContext.WriteLine($"score: {score}");
+            Assert.True(score.Equals(3.8f));
+        }
+
         [Test]
         public async Task CallWithoutParams() {
             await LCCloud.Run("hello");

Storage/Storage/LCCloud.cs

@@ -36,6 +36,15 @@ namespace LeanCloud.Storage {
             return response;
         }
 
+        public static async Task<T> Run<T>(string name,
+            Dictionary<string, object> parameters = null) {
+            Dictionary<string, object> response = await Run(name, parameters);
+            if (response.TryGetValue("result", out object result)) {
+                return (T)result;
+            }
+            return default;
+        }
+
         /// <summary>
         /// Invokes a cloud function as a remote procedure call.
         /// </summary>