Add FIX 4.2 specific package

Establish a FIX 4.2 specific package similar to the MB Trading and Lime
Brokerage specific FIX packages.

Signed-off-by: Jussi Virtanen <jussi.virtanen@valotrading.com>
Move FIX 4.2 tags to FIX 4.2 specific package

Signed-off-by: Jussi Virtanen <jussi.virtanen@valotrading.com>
Move FIX 4.2 messages to FIX 4.2 specific package

Signed-off-by: Jussi Virtanen <jussi.virtanen@valotrading.com>
Move DefaultMessageHeader to FIX 4.2 specific package

Signed-off-by: Jussi Virtanen <jussi.virtanen@valotrading.com>
Move FIX 4.2 MsgTypeValue to FIX 4.2 specific package

Signed-off-by: Jussi Virtanen <jussi.virtanen@valotrading.com>
Move DefaultMessageFactory to FIX 4.2 specific package

Signed-off-by: Jussi Virtanen <jussi.virtanen@valotrading.com>