feat(armar): limit fps for the server to fix the performance

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

@@ -8,6 +8,9 @@
 
 #### Game Server Settings ####
 
+# MaxFPS to limit the used Server resouces
+maxfps="60"
+
 # Queryport cannot be changed according to the wiki
 # https://community.bistudio.com/wiki/Arma_Reforger:Server_Hosting
 queryport="17777"
@@ -17,7 +20,7 @@ serverprofile="server"
 serverprofilefullpath="${serverfiles}/profiles/${serverprofile}"
 
 ## Server Parameters | https://docs.linuxgsm.com/configuration/start-parameters#additional-parameters
-startparameters="-config ${servercfgfullpath} -profile ${serverprofilefullpath}"
+startparameters="-config ${servercfgfullpath} -profile ${serverprofilefullpath} -maxFPS ${maxfps}"
 
 #### LinuxGSM Settings ####