[feat]optimize custom node BizyAir extensions JS module load

[Of-qinhai]

1.Fix JS module reference issue in ComfyUI extension bizyair within the Onebrain platform codeserver.
Onebrain platform
2.Optimize commonly used ComfyUI JS modules into _help.js for easier referencing & import .

 import { api,app,$el } from "./_help.js";

3.If new ComfyUI JS modules are utilized in the future and are missing in _help.js, they can be added accordingly.

// _help.js
let app;
let ComfyWidgets;
let api;
let $el;

[doombeaker]

可以补充一下示例说明吗。就是在改动前的版本，哪些情况会失效。

改变后，如何保证了原有失效情况，和现在可行的情况，都是 ok 的。

相当于简单说明下代码主要作用，麻烦了

[Of-qinhai]

先别合，我好像又发现了不得了的事