SKR pico and Waveshare cm4-nano-b to TwoTree Sapphire PRO SP3

BigTreeTech SKR Pico and Waveshare cm4-nano-b mount to fit into the TwoTrees Sapphire PRO SP3. Should fit in the SP5 as well. 

The alignment of the Waveshare cm4-nano-b carriercase may look unintuitive, but it is required for the air stream to cool the Raspberry Pi Compute Model 4.