SNOW-973444: Change Prepare to be handled as a Noop (#894)

### Description
Change Prepare method to be handled as a noop, removed throw
NotImplementedException.

### Checklist
- [x] Code compiles correctly
- [x] Code is formatted according to [Coding
Conventions](../CodingConventions.md)
- [x] Created tests which fail without the change (if possible)
- [x] All tests passing (`dotnet test`)
- [x] Extended the README / documentation, if necessary
- [x] Provide JIRA issue id (if possible) or GitHub issue id in PR name

Snowflake.Data.Tests/UnitTests/SFDbCommandTest.cs

@@ -60,9 +60,9 @@ public void TestCommandExecuteAsyncThrowsExceptionWhenCommandTextIsNotSet()
         }
 
         [Test]
-        public void TestCommandPrepareThrowsNotImplemented()
+        public void TestCommandPrepareShouldNotThrowsException()
         {
-            Assert.Throws<NotImplementedException>(() => command.Prepare());
+            Assert.DoesNotThrow(() => command.Prepare());
         }
     }
 }

Snowflake.Data/Client/SnowflakeDbCommand.cs

@@ -239,9 +239,12 @@ public override async Task<object> ExecuteScalarAsync(CancellationToken cancella
                 return DBNull.Value;
         }
 
+        /// <summary>
+        /// Prepares the command for execution.
+        /// This method is currently not implemented and acts as a no-operation (Noop).
+        /// </summary>
         public override void Prepare()
         {
-            throw new NotImplementedException();
         }
 
         public string GetQueryId()