G'day,
Honestly, it sounds like you may require more prerequisite knowledge required to develop a driver (a lot of background knowledge is required, especially for things like lighting drivers). There is no easy 1-page pdf (especially since you'd definitely want 2-way).
To put things into perspective, before I worked for Chowmain, I spent weeks learning to write a CBUS lighting driver, and it still wasn't completed (and this was with a lot of previous reverse engineering / development background). In fact, when i started working here, we mostly scrapped the majority of the code too (and it turned out, I was further from completion than I thought). And, a lot of small things I would have missed without Alan's insight and mentoring.
All of our lighting drivers we've written recently are thousands of lines of code (Shelly is probably our biggest, and the whole driver is well-over 10000 lines of code, although, not all the code is related to lighting, but a lot of it is)
My recommendation would be to contact the manufacturer, and get them to contact us for a quote honestly https://chowmain.software/for-manufacturers/request-quote . Otherwise, keep in mind, a lighting driver takes months to develop in full sometimes. These days we can finish