Define elements for input_q

[arjunsarin]

Instead of putting simple strings into the queue we want to provide more information. However, there should be a well defined set of require / optional parameter per element of the input q

Possible content:

• user id (multiplayer coming!)
• priority
• command
• timestamp

Implementation probably in a class.

This is a step towards multiplayer gaming.

[arjunsarin]

Duplicate to #9