FS-308: Should fix invalid names by checking if the name matches the A-z regex and if the name's length is between 3-16

pom.xml

@@ -5,7 +5,7 @@
 
     <groupId>me.totalfreedom</groupId>
     <artifactId>TotalFreedomMod</artifactId>
-    <version>2021.06</version>
+    <version>2021.05</version>
     <packaging>jar</packaging>
 
     <properties>

src/main/java/me/totalfreedom/totalfreedommod/command/Command_cage.java

@@ -67,6 +67,11 @@ public class Command_cage extends FreedomCommand
                     outerMaterial = Material.PLAYER_HEAD;
                     if (args.length >= 3)
                     {
+                        if (!args[2].matches("([A-z]*)") || args[2].length() < 3 || args[2].length() > 16)
+                        {
+                            msg("Invalid name!", ChatColor.RED);
+                            return true;
+                        }
                         skullName = args[2];
                     }
                     else