Implement Lagometer

Implement the Lagometer but with 2 new things if possible.

The first "new thing" would be this:

// Enable the 'lagometer'
// "0" - Off
// "1" - On
// "2" - On but only shown when you press Esc (the new thing)
drawLagometer "2"

The Lagometer shows the ping but only on the graph, the other "new thing" is that the Lagometer says below the ping number. * This part could be interesting if you can't see the ping on the scoreboard and so on.