Are you looking to hire someone to do this? Is this script something you could resell?
I would like to know how much it would cost to get it done. Depending on this, I can decide whether I will hire someone or not. If paid, I may resell. If free, I wont.
I'd say, it would be much cheaper (if you're planning to pay for this) to just figure out the ways to use Composer or other FTP ways to manage the dependency instead of hiring someone who would potentially re-write the dependency modules if any. I'm not sure how complicated the implementation would be but if there are multiples modules, you are looking to re-invent the wheel. Also, if those modules mentioned above are open source, fork them and use it in your project?
All of these, what I have mentioned, are definitely open source, but I dont know how to pull them together on a shared hosting environment, where I do not have the root access or ability to compile something from command line.