[fatfs, wl]: partition.c interim update to work around non-Linux target [partition_api_test]: cleanup, new function for tmp filename generation
Various extensions and fixes to improve Linux target SPI Flash emulation. Used by the host tests
All the partition handling API functions and data-types were moved from the 'spi_flash' component to the new one named 'esp_partition'. See Storage 5.x migration guide for more details