Properly handle the directConnection property

[estebgonza]

First ensure that directConnection=false don't allow us to intercept queries:

• throw an error to the driver ? "To use Maggregor proxy please enable directConnection=true"
• Force directConnection=true ? Ignore directConnection=false and rewrite the request.
• Log only the information in the terminal (and in future UI): "A connection was received on Maggregor without using directConnection=true, Maggregor will not be used for this client."