Template/Base Repository/Preferred Method for adding new basic assumed-state RF devices

Hello,
I am a software engineer and would like to add some integrations for basic RF devices I have around the house. Given HA's new RF platform, this should be relatively straightforward. Specifically, I would like to add devices like this: https://www.lowes.com/pd/PRIME-Prime-Black-Remote-Control/1000515527 - A remotely operated switch, just On/Off, with assumed state in home assistant. I have a few different ones which are all essentially the same thing but by different manufacturers. Using my Flipper Zero, I've determined these use a non-rolling code but do appear to have a few-byte key of some sort.

Thus:

  • Is there some sort of building-block or base repository to start from, given that the 3 manufacturers I have are probably just the start of devices that fit this mold, with the the only difference being the actual RF code sent. I.e. given the extracted Flipper Zero files, what's the fastest route to a nice integration.
  • Does HA have any method or plan to use a RF Receiver to "read" the key/code from a remote when pressed near it? Does HA have plans or a roadmap to "learn" remotes?

Like I said, I know how to code and wouldn't mind doing some heavy lifting on this, but I do need some direction on how HA wants to handle this and if there's any launching points.

Thank you!