Bug fix, improved performance and ram usage

• updated SdFat2 initialization for Arduino Mega; integrated W5500 initialization (example Arduino_Mega_W5500_SdFat2)
• Fix READ WRITE APPEND problem
• Fix ram usage
• Set correct buffer size (Dynamic and Static)
• Add FTP callbacks for connection events and file transfers; update data types for free space and transferred size
• Improve file-open handling (ensure reads start at file beginning), increase passive data connection wait time, add robust FFat dir create/remove (fallback to /ffat and POSIX), add configurable minimum free-space check before uploads
• Refactor FTP callback functions to use uint32_t for space parameters, improve serial output, and register callbacks for FTP events

Multiple minor fix and optimization

Multiple minor fix and optimization
Fix LittleFS filename size.

Minor fix and add support for SYST command

In this release, we are applying several fixes and integrating the SYST command (thanks @MartinMueller2003)

Fix ESP32 rename on SD

Fix ESP32 rename on SD (thanks @scuba-hacker) #44

Fix esp8266 Ethernet (w5x00) issue and explain solution for ESP32 Ethernet (w5x00), add new Networks management

Fix esp8266 Ethernet (w5x00) issue and explain solution for ESP32 Ethernet (w5x00), add new Networks management

Fix SPIFM external SPI Flash date management (add SPIFM esp32 example)

Fix SPIFM external SPI Flash date management (add SPIFM esp32 example)

Add support for Raspberry Pi Pico W and rp2040 boards, Fix SD card config

Add support for Raspberry Pi Pico W and rp2040 boards, and fix SD card config

Soft AP IP management, more disconnect event

Soft AP IP management, more disconnect event and SD_MCC

Fix path on SD card variant

Fix path on SD card variant and minor fix

Minor fix

Minor fix (removed Serial.printf).