Build a new Makercode editor with pxt-microbit

Dear Makecode Team,
I create an extension board for microbit like this:

And I was building a new editor from pxt-microbit in my server.
But I can’t modify or add a new package(extension) to my editor(I add a new package to folder pxt-common-package/libs or pxt-microbit/libs but I wasn’t run)

Kindly respond and let me know how to add the package for developing new editor.
Thanks you very much.

Best regard,
MakerHanoi fablab.