Merge branch 'feature/wear_levelling' into 'master'

Merge branch 'feature/wear_levelling' into 'master'

wear levelling

This MR adds wear levelling component. It presents an interface similar to the interface of spi_flash and esp_partition. Inside, it stores data inside a partition to in a way that reduces worst case number of erase cycles for any given sector.

Also included are APIs similar to the ones provided for SDMMC to mount FAT filesystem on top of the wear levelling partition. A simple example shows how this API can be used.

Ref TW10338.

See merge request !567