Move the remaining HttpUtils function over to Router

src/main/java/emu/grasscutter/server/http/Router.java

@@ -1,6 +1,7 @@
 package emu.grasscutter.server.http;
 
 import io.javalin.Javalin;
+import io.javalin.http.Handler;
 
 /**
  * Defines routes for an {@link Javalin} instance.
@@ -12,4 +13,21 @@ public interface Router {
      * @param javalin A Javalin instance.
      */
     void applyRoutes(Javalin javalin);
+    
+    /**
+     * Applies this handler to all endpoint types
+     * @param javalin A Javalin instance.
+     * @param path
+     * @param ctx
+     * @return The Javalin instance.
+     */
+    public default Javalin allRoutes(Javalin javalin, String path, Handler ctx) {
+        javalin.get(path, ctx);
+        javalin.post(path, ctx);
+        javalin.put(path, ctx);
+        javalin.patch(path, ctx);
+        javalin.delete(path, ctx);
+
+        return javalin;
+    }
 }