Create custom toolbar and show on startup for 3dsmax

Job ID: 32646967

Budget: $100 – $250 USD

I mentioned my problem here as well:
https://forums.autodesk.com/t5/3ds-max-programming/create-own-toolbar-with-programming/td-p/10881096
in short, I want to create my own toolbar automatically.
for example, you can check D5 converter here: https://www.d5render.com/download
when I download and install D5 converter and when I open Max after installation, D5's toolbar appear in my max window automatically. This is what we want for my scripts.
And Vray also does the same thing. when I install VRay, VRay's toolbar appear my window (you can check picture)
Related categories: Python 3ds Max Scripting