Wifi and mqtt data is very hidden

[devdenn]

Summary

Move these wifi passwords and addresses into a settings.cfg.

ES-ESP32-firmware/Firmware/src/main.cpp

Lines 20 to 27 in 6f1800d

	const char* ssid = "SWTP_TEST_WLAN";
	const char* password = "SWTPswtp";
	// ---MQTT Broker connection settings--- //
	//Broker Server Address
	const char* mqtt_server = "192.168.1.116";
	//Port Number. 1883 is the default Port for MQTT.
	uint16_t mqtt_port = 1883;

Where are possible dependencies?

• The affected section in the readme.md.

What will be the advantage?

• Easy to edit without having to browse through the code.