Added Unreal Tournament 99

[IceOfWraith]

Unreal Tournament 99 Guide

UT 99 has the following requirements: Needs 5 sequential ports (game port + 4 next ports), plus an additional webserver port. AMP can’t at this stage guarantee the ports are sequential. Uses an AMP-supplied config file (_AMP_UnrealTournament.ini) that needs to be used instead of the default UnrealTournament.ini). This is to ensure that any user changes to the file are not overwritten on later updates. (Credit to @Greelan)