feat(fs): add Arduino ESP LittleFS driver (#5905)

docs/libs/arduino-littlefs.rst

@@ -0,0 +1,22 @@
+.. _arduino_esp_littlefs:
+
+====================
+Arduino ESP littlefs
+====================
+
+LittleFS is a little fail-safe filesystem designed for microcontrollers and integrated in the Arduino framework 
+when used with ESP32 and ESP8266.
+
+Detailed introduction: 
+- https://github.com/esp8266/Arduino 
+- https://github.com/espressif/arduino-esp32
+
+
+Usage
+-----
+
+Enable :c:macro:`LV_USE_FS_ARDUINO_ESP_LITTLEFS` and define a :c:macro`LV_FS_ARDUINO_ESP_LITTLEFS_LETTER` in ``lv_conf.h``.
+
+
+API
+---

docs/libs/fs.rst

@@ -15,6 +15,7 @@ LVG has built in support for:
 - WIN32 (Windows using Win32 API function .e.g ``CreateFileA``, ``ReadFile``)
 - MEMFS (read a file from a memory buffer)
 - LITTLEFS (a little fail-safe filesystem designed for microcontrollers)
+- Arduino ESP LITTLEFS (a little fail-safe filesystem designed for Arduino ESP)
 
 You still need to provide the drivers and libraries, this extension
 provides only the bridge between FATFS, STDIO, POSIX, WIN32 and LVGL.

docs/libs/index.rst

@@ -22,4 +22,5 @@
     rlottie
     ffmpeg
     rle
+    arduino_esp_littlefs
     lfs