doc: added documentation comment for Server mainclass

Server/src/main/java/uulm/teamname/marvelous/server/Server.java

@@ -19,6 +19,13 @@ import java.nio.file.Path;
 import java.util.HashMap;
 import java.util.Map;
 
+/**
+ * The MainClass of the Server application. The main responsibility of this class is to parse command line arguments,
+ * set the log level, load the configuration files, and create and manage the threads that make up the server itself.
+ * To run the server edit your IntelliJ run config, and enter
+ * {@code -c .\configs\marvelheros.character.json -m .\configs\matchconfig_1.game.json
+ * -s .\configs\asgard.scenario.json -v} into the arguments field.
+ */
 public class Server {
 
     public static void main(String[] args) {