[Documentation] Add information about special code tags in VOXporter

https://www.xsharp.eu/forum/topic?p=33738#p33738

Probably need to create a separate page for VOXporter. Make sure the code tags are explained:


{VOXP:COM} : Comment current line
{VOXP:UNC} : Uncomment
{VOXP:DEL} : Delete line

TEXTBLOCK VXP-TOP