Added de_DE support, deactivated original led mapping

[eisenfunk]

Hi there,

the RoccatVulcanAimo module has wrong LED mappings on my german keyboard. I think of two reasons for this:

a) vulcan aimo 121 has a different mapping
b) de_DE layout is different to the original one in the code

I can't test anything else than de_DE on my vulcan 121 due to missing hardware (sorry, just one keyboard in my set :) )
But all signs point to possibility b), because the german keymap has also a slightly different Key style in the hardware layout. Producing a series of keyboards with different country codes would make sense.

I've commented the original mapping and added my de_DE mapping for Vulcan Aimo 121. So beware when you accept this pull without reediting.

br and a happy new 2022,

Michael

[CalcProgrammer1]

I've been thinking about ways to support alternate layouts on keyboards over on a GitLab MR that adds similar mapping to Razer boards. I think I would like to add a layout field to the RGBController, expose the en_US/UK keys from the RGBController, and automatically remap them based on en_US/UK to X lookup tables. Since layouts should be standard across all brands of keyboard it keeps this work out of each individual keyboard controller.