Adding getInfo request

Example output:
{"response":{"seq":2,"info":{"name":"SERVER NAME","headerImage":"URL TO PNG FILE","url":"CUSTOM URL OF SERVER","map":"Procedural Map","mapSize":4500,"wipeTime":1607024434,"players":188,"maxPlayers":200,"queuedPlayers":0,"seed":86804,"salt":9000}}}

rustplus.js

@@ -230,6 +230,17 @@ class RustPlus extends EventEmitter {
             },
         }, callback);
     }
+
+    /**
+     * Get the server info
+     */
+    getInfo(callback) {
+        this.sendRequest({
+            getInfo: {
+
+            },
+        }, callback);
+    }
 
 }