* Added 2 ffat partition schemes for 4MB modules + improved descriptions.
Existing format options were unclear on how much spiffs you were
getting. Also add missing 1MB App/3MB Spiffs split.
This addresses https://github.com/espressif/arduino-esp32/issues/1799
This makes it very clear what each option gives you, and also adds 2 options
to get ffat on 4MB chips..
* Added link to ffat howto.
* Update boards.txt
Add menu items for ffat on mhetesp32minikit board.
* Add partition table.
* Added ffat partition for 4MB ESP32 Dev Module.
* Added comment about partitioning schemes.
* First commit of FFat library
* Fixed reboot loops if no fat present. Added CMakeLists
* Functionalize the partition checks
* Cleanup, especially in format
* Dont format if mounted. More wording cleanup
* 16M ffat should only be on 16M board
* Fix some casting issues that trip up the compiler when building as ESP-IDF component
* Update BLE lib
* Update IDF to f586f5e
* Restructure Bluetooth Serial includes
* Update esptool and gen_esp32part
* Add partition scheme selection for menuconfig
* Add partition scheme selection for Arduino IDE
* Fix BLE example
* Second attempt BLE fix
* Add exceptions to PIO
* enchanced EEPROMClass
* Added eeprom examles and modified partition
* added eeprom class and extra examples
* No changes
* No changes
* added eeprom class and examples
* fixed typo
* length() returns user-defined sector size
* updated and annotated example
