Real-Time Clock from the Internet via ESP32 NTP

The ESP32 connects to Wi-Fi and retrieves real time with millisecond precision from NTP (Network Time Protocol) servers. Thanks to the `configTzTime()` function, the Turkey time zone (TRT, UTC+3) is automatically applied, and DST transitions in countries that observe daylight saving time are automatically managed using a POSIX TZ string. The time is displayed both on the Serial Monitor and on an optional I2C LCD. `configTzTime()` starts the SNTP service; periodic resynchronization takes place wh