Support for Stored Procedure command type

[Aerendel]

Current version of MySqlCommand only supports CommandType = Text. Supporting stored procedure commands is a must for any realistic migration from the official MySQL Connector.

ps: nice work so far!

[ScottAllSet]

This is really important for my project as well.

[caleblloyd]

I have begun work on this here: caleblloyd@65701f8