This task it to add the following enhancements in SST service:

• refactor the sst_flash_block_to_block_move function to reduce the memory requirements
• rename SST_RAM_FS flag to SST_CREATE_FLASH_LAYOUT in order to clarify its meaning
• update CMakeLists.inc to print out information about the cmake SST service flags selected
• add const in the asset policy and permission arrays
• update crypto interface implementation to return valid PSA SST errors