feat: add EnableImplicitSession flag support with parsing tests

Author: LiamHamsters

src/Ydb.Sdk/src/Ado/YdbConnectionStringBuilder.cs

@@ -41,6 +41,7 @@ private void InitDefaultValues()
         _maxReceiveMessageSize = GrpcDefaultSettings.MaxReceiveMessageSize;
         _disableDiscovery = GrpcDefaultSettings.DisableDiscovery;
         _disableServerBalancer = false;
+        _enableImplicitSession = false;
     }
 
     public string Host
@@ -315,6 +316,18 @@ public int CreateSessionTimeout
 
     private int _createSessionTimeout;
 
+    public bool EnableImplicitSession
+    {
+        get => _enableImplicitSession;
+        set
+        {
+            _enableImplicitSession = value;
+            SaveValue(nameof(EnableImplicitSession), value);
+        }
+    }
+
+    private bool _enableImplicitSession;
+
     public ILoggerFactory? LoggerFactory { get; init; }
 
     public ICredentialsProvider? CredentialsProvider { get; init; }
@@ -491,6 +504,9 @@ static YdbConnectionOption()
             AddOption(new YdbConnectionOption<bool>(BoolExtractor,
                     (builder, disableServerBalancer) => builder.DisableServerBalancer = disableServerBalancer),
                 "DisableServerBalancer", "Disable Server Balancer");
+            AddOption(new YdbConnectionOption<bool>(BoolExtractor,
+                    (builder, enableImplicit) => builder.EnableImplicitSession = enableImplicit),
+                "EnableImplicitSession", "ImplicitSession");
         }
 
         private static void AddOption(YdbConnectionOption option, params string[] keys)

src/Ydb.Sdk/test/Ydb.Sdk.Ado.Tests/YdbConnectionStringBuilderTests.cs

@@ -28,6 +28,7 @@ public void InitDefaultValues_WhenEmptyConstructorInvoke_ReturnDefaultConnection
         Assert.False(ydbConnectionStringBuilder.DisableDiscovery);
         Assert.False(ydbConnectionStringBuilder.DisableServerBalancer);
         Assert.False(ydbConnectionStringBuilder.UseTls);
+        Assert.False(ydbConnectionStringBuilder.EnableImplicitSession);
     }
 
     [Fact]
@@ -50,7 +51,7 @@ public void InitConnectionStringBuilder_WhenExpectedKeys_ReturnUpdatedConnection
             "ConnectTimeout=30;KeepAlivePingDelay=30;KeepAlivePingTimeout=60;" +
             "EnableMultipleHttp2Connections=true;" +
             "MaxSendMessageSize=1000000;MaxReceiveMessageSize=1000000;" +
-            "DisableDiscovery=true;DisableServerBalancer=true;"
+            "DisableDiscovery=true;DisableServerBalancer=true;EnableImplicitSession=true;"
         );
 
         Assert.Equal(2135, connectionString.Port);
@@ -74,9 +75,10 @@ public void InitConnectionStringBuilder_WhenExpectedKeys_ReturnUpdatedConnection
                      "ConnectTimeout=30;KeepAlivePingDelay=30;KeepAlivePingTimeout=60;" +
                      "EnableMultipleHttp2Connections=True;" +
                      "MaxSendMessageSize=1000000;MaxReceiveMessageSize=1000000;" +
-                     "DisableDiscovery=True;DisableServerBalancer=True", connectionString.ConnectionString);
+                     "DisableDiscovery=True;DisableServerBalancer=True;EnableImplicitSession=True", connectionString.ConnectionString);
         Assert.True(connectionString.DisableDiscovery);
         Assert.True(connectionString.DisableServerBalancer);
+        Assert.True(connectionString.EnableImplicitSession);
     }
 
     [Fact]