Add support for Lenovo Legion K510 keyboard

Initial commit for Lenovo Legion K510 keyboard.

I've tested this on Void Linux without any issues. There's no wiki entry yet, but if desired I can create one (should be pretty simple given that there's a working implementation of it here).

The K500 keyboard requested here (#1553) might work similar, but I haven't got the hardware to test it, so I won't touch this issue for now.

Reviews welcome, thank you for this awesome project!

Checklist for Accepting a Merge Request for a New Device

• The source branch of the merge request is not protected (master is protected by default when creating a fork, so it is recommended to not use it as your source).
• The New Device issue raised for this device is linked to this MR with a keyword Closes / Resolves / Implements
• There is a device protocol page in the Developer Wiki or there is enough information / captures in the New Device issue to provide ongoing support.
• The code to be merged follows the style guide and change requirements as documented in the contributing guide.

• Meta data for the device is included in RGBController_* file
• This device is detected and is working on Windows 10 and / or 11
• This device is detected and is working on Linux (Please specify distribution and releases tested)
• Logging for Info, Warnings and Errors has been added for troubleshooting purposes