fix(cs2server): pass the GSLT to the server (#5107)

Pass the configured GSLT to Counter-Strike 2 after its server config is loaded.

lgsm/config-default/config-lgsm/cs2server/_default.cfg

@@ -21,7 +21,7 @@ wsapikey=""
 gslt=""
 
 ## Server Parameters | https://docs.linuxgsm.com/configuration/start-parameters#additional-parameters
-startparameters="-dedicated -ip ${ip} -port ${port} -maxplayers ${maxplayers} -authkey ${wsapikey} +exec ${selfname}.cfg"
+startparameters="-dedicated -ip ${ip} -port ${port} -maxplayers ${maxplayers} -authkey ${wsapikey} +exec ${selfname}.cfg +sv_setsteamaccount ${gslt}"
 
 ## Extra Parameters | https://docs.linuxgsm.com/configuration/start-parameters#extra-parameters
 # Added to the end of startparameters.