feat: add help cli arg and add descriptions

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

@@ -29,23 +29,30 @@ import java.util.Map;
  */
 public class Server {
     private static PartyConfig partyConfig;
-
     private static ScenarioConfig scenarioConfig;
     private static CharacterConfig characterConfig;
+
     private static Integer maxLobbies;
 
     public static void main(String[] args) {
 
         ServerArgs serverArgs = new ServerArgs();
+        JCommander jc = JCommander.newBuilder()
+                .addObject(serverArgs)
+                .build();
 
         try {
-            JCommander.newBuilder()
-                    .addObject(serverArgs)
-                    .build()
-                    .parse(args);
+            jc.parse(args);
         } catch (ParameterException e) {
             Logger.error("Invalid parameters: {}", e.getMessage());
             System.exit(1);
+            return;
+        }
+
+        if(serverArgs.isHelp()) {
+            jc.usage();
+            System.exit(0);
+            return;
         }
 
         // System.out.println(serverArgs);

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

@@ -11,18 +11,11 @@ public class ServerArgs {
     private boolean help;
 
     /** Defines the log level for the current execution of the Server */
-    @Parameter(names = {"-l", "--log-level"}, description = """
-            Log Level
-                0: None
-                1: Error
-                2: Warning
-                3: Info (default)
-                4: debug
-                5: trace""")
+    @Parameter(names = {"-l", "--log-level"}, description = "Log Level: 0 = None, 1 = Error, 2 = Warning, 3 = Info, 4 = Debug, 5 = Trace")
     private Integer logLevel = 3;
 
     /** Equivalent to logLevel = 5. Maximum log level (trace) for everything */
-    @Parameter(names = {"-v", "--verbose"})
+    @Parameter(names = {"-v", "--verbose"}, description = "Enables all log messages")
     private boolean verbose = false;
 
     /** Port that the server listens on */
@@ -42,14 +35,14 @@ public class ServerArgs {
     private File scenarioConfigFile;
 
     /** Whether the server only checks the configuration files, and then stops execution */
-    @Parameter(names = {"-C", "--check-conf", "--check-config"})
+    @Parameter(names = {"-C", "--check-conf", "--check-config"}, description = "Validates the given config files and exits")
     private boolean checkConfig = false;
 
     /** The path to the folder in which replays are saved */
-    @Parameter(names = {"--replay", "-r"})
+    @Parameter(names = {"--replay", "-r"}, description = "Path for replay files to be saved at")
     private String folderPath;
 
-    @Parameter(names = {"--max-lobbies", "-L", "--team25-max-lobbies"} )
+    @Parameter(names = {"--max-lobbies", "-L", "--team25-max-lobbies"}, description = "Maximum amount of lobbies that can be created")
     private int maxLobbies = 8;
 
     /** Whether help is requested */