Add server analytics option to Arma 3 config

For more info check out here: https://community.bistudio.com/wiki/Arma_3_Analytics

Enabled by default as that's what Bohemia ships the game with, might want to disable to save on bandwidth!

Arma3/server.cfg

@@ -74,6 +74,9 @@ persistent = 1;
 //  none, short, full
 timeStampFormat = "short";
 
+// Server Statistics
+//  Set this to 0 to opt-out! More info: https://community.bistudio.com/wiki/Arma_3_Analytics
+statisticsEnabled = 1;
 
 // SERVER SECURITY/ANTI HACK