Fix mavlink disconnection in pauses in cli commands

Implement pause function that proceeds processing mavlink.
Use temporal workaround for simulation, as micros function gives the same result on the same simulation step.

flix/motors.ino

@@ -60,7 +60,7 @@ void testMotor(uint8_t n) {
 	motors[n] = 1;
 	delay(50); // ESP32 may need to wait until the end of the current cycle to change duty https://github.com/espressif/arduino-esp32/issues/5306
 	sendMotors();
-	delay(3000);
+	pause(3);
 	motors[n] = 0;
 	sendMotors();
 	print("Done\n");