Initial CSGO support

src/games/csgo.rs

@@ -0,0 +1,16 @@
+use crate::errors::GDError;
+use crate::valve::{ValveProtocol, App, GatheringSettings, Response};
+
+pub struct CSGO;
+
+impl CSGO {
+    pub fn query(address: &str, port: Option<u16>) -> Result<Response, GDError> {
+        ValveProtocol::query(App::CSGO, address, match port {
+            None => 27015,
+            Some(port) => port
+        }, GatheringSettings {
+            players: true,
+            rules: true
+        })
+    }
+}

src/games/mod.rs

@@ -1,6 +1,8 @@
 
 pub mod tf2;
 pub mod the_ship;
+pub mod csgo;
 
 pub use tf2::*;
 pub use the_ship::*;
+pub use csgo::*;