Zephyr modules

This is a library of several zephyr modules. Modules can easily be added as an extension to your zephyr development by cloning the library in your own folder of choice and by adding them as an ZEPHYR_EXTRA_MODULES on the west command line or by defining the folder as a ZEPHYR_EXTRA_MODULES in your own .zephyrrc.

sfcb: a small/secure flash circular buffer, an alternative for fcb/nvs.

settings_sfcb: sfcb backend support for settings.

zb-8: a upgradeable secure bootloader for zephyr.

zepboot: a new secure bootloader for zephyr, an alternative for mcuboot.

zepboot_dfu: a (BT) dfu loader library and samples for zepboot.