Currently (and never been) there is no way to set the relicCount in autostarted game, resulting in some falsy variable and thus the creation loop in CaptureTheRelic doesn't create anything. Adding the setting to gamesetup.cpp here + a default.

Noticed by mimo in rP21474

start the game like binaries/system/pyrogenesis -autostart-victory=capture_the_relic -autostart="random/alpine_lakes" -autostart-seed=-1 -autostart-players=2 -autostart-civ=1:athen -autostart-civ=2:brit -autostart-ai=2:petra and capture some relics

Notice duplicating settings and defaults from gamesetup.js is bad and we need to find a way to shrink that, but consider it meh for now