Changed

• Changed the implementation of the core library used for enumerating devices and device operation management.
• nRF52, nRF53 and nRF91 Series: Changed the library that handled devices of these Series. There was no change to the handling of devices of other Series.
• Experimental commands x-cpu-register-read, x-read and x-write are now supported for devices from nRF52, nRF53, and nRF91 Series.