Add a sample that demonstrates use of UICR.SECONDARY.TRIGGER#25002

rlubos merged 4 commits intonrfconnect:mainnrfconnect/sdk-nrf:mainfrom

SebastianBoe:gen_uicr_finalSebastianBoe/fw-nrfconnect-nrf-1:gen_uicr_finalCopy head branch name to clipboard