This PR introduces a non-blocking version of the localIP function, named localIPNonBlocking, to the WiFi.cpp file. The new function addresses situations where the current localIP implementation, which uses a blocking delay(100) call, can cause issues such as triggering a watchdog timer (WDT).

This PR also solves:

• Non-blocking version of WiFi::localIP() #406

New Function: localIPNonBlocking

Added to libraries/WiFiS3/src/WiFi.cpp at line 357 (after the existing localIP implementation).
Utilizes a timeout mechanism with millis() to avoid blocking delays.
Returns the device's local IP address or a default address (0.0.0.0) if the timeout expires.

Example Usage:

unsigned long timeout = 5000; // 5-second timeout
IPAddress ip = WiFi.localIPNonBlocking(timeout);

if (ip) {
    Serial.println(ip); // Print the IP if successfully retrieved
} else {
    Serial.println("Failed to get IP within the timeout period");
}