Add constructors and Javadoc comments to improve clarity and completeness across server components, including WebSocket and routing classes.

src/main/java/dev/coph/nextusweb/server/websocket/WebSocketGroup.java

@@ -42,6 +42,8 @@ public final class WebSocketGroup {
     }
 
     /**
+     * Returns the name of this group.
+     *
      * @return the group name
      */
     public String name() {
@@ -71,6 +73,8 @@ public final class WebSocketGroup {
     }
 
     /**
+     * Returns how many connections are currently in the group.
+     *
      * @return the current number of member connections
      */
     public int size() {