ZMS: Add ASIL-D enhancements (reserved capacity, write verification, redundancy)

[avrabe]

From STPA + AUTOSAR NvM/Fee research. Needs: reserved capacity for safety data (FeeImmediateData pattern), write-back verification, redundant storage for safety blocks, admission control. See SWREQ-ZMS-P09, P10 and GAP-ZMS-2, 3, 4.