Make logger public

Good for encompassing logs EX a hanging System.out log can be passed back to the extension that called it

src/main/java/net/minestom/server/extensions/Extension.java

@@ -73,7 +73,7 @@ public abstract class Extension {
      * @return The logger for the extension
      */
     @NotNull
-    protected Logger getLogger() {
+    public Logger getLogger() {
         return logger;
     }