implement toggle perspective

(cherry picked from commit cbfb575b2e418215877cecb89e3b4c47d6f56c8d)

src/js/net/minecraft/client/render/model/ModelBase.js

@@ -4,17 +4,19 @@ window.ModelBase = class {
      * Rebuild the model
      *
      * @param tessellator Tessellator to render vertices
+     * @param group      Group to attach the built model
      */
-    rebuild(tessellator, entity) {
+    rebuild(tessellator, group) {
 
     }
 
     /**
      * Render the model
      *
+     * @param group Group to render
      * @param time Animation offset
      */
-    render(time) {
+    render(group, time) {
 
     }