Added automatic MQTT setup when firmware has login info inside local .env file

lib/AmsConfiguration/include/MqttDefaults.h

@@ -0,0 +1,71 @@
+#pragma once
+
+//-----------------------------------------------------------------------------//
+// MQTT factory defaults
+//
+// Update these values before building the firmware to automatically provision
+// new devices with a pre-configured MQTT connection. Leave any field empty to
+// keep the existing behaviour (value will be cleared on first boot).
+//-----------------------------------------------------------------------------//
+
+// Broker hostname or IP address (leave empty to disable automatic MQTT setup)
+#ifndef MQTT_DEFAULT_HOST
+#define MQTT_DEFAULT_HOST ""
+#endif
+
+// Broker port (1883 for plain MQTT, 8883 for TLS)
+#ifndef MQTT_DEFAULT_PORT
+#define MQTT_DEFAULT_PORT 1883
+#endif
+
+// Optional username/password credentials
+#ifndef MQTT_DEFAULT_USERNAME
+#define MQTT_DEFAULT_USERNAME ""
+#endif
+
+#ifndef MQTT_DEFAULT_PASSWORD
+#define MQTT_DEFAULT_PASSWORD ""
+#endif
+
+// Default client identifier
+#ifndef MQTT_DEFAULT_CLIENT_ID
+#define MQTT_DEFAULT_CLIENT_ID "ams-reader"
+#endif
+
+// Default publish and subscribe topics
+#ifndef MQTT_DEFAULT_PUBLISH_TOPIC
+#define MQTT_DEFAULT_PUBLISH_TOPIC "amsreader/telemetry"
+#endif
+
+#ifndef MQTT_DEFAULT_SUBSCRIBE_TOPIC
+#define MQTT_DEFAULT_SUBSCRIBE_TOPIC "amsreader/command"
+#endif
+
+// Payload format (0: JSON classic, 5: JSON multi-topic, etc.)
+#ifndef MQTT_DEFAULT_PAYLOAD_FORMAT
+#define MQTT_DEFAULT_PAYLOAD_FORMAT 0
+#endif
+
+// Whether to use TLS when connecting (false/true)
+#ifndef MQTT_DEFAULT_SSL
+#define MQTT_DEFAULT_SSL false
+#endif
+
+// Enable periodic state updates (set to true and pick an interval below)
+#ifndef MQTT_DEFAULT_STATE_UPDATE
+#define MQTT_DEFAULT_STATE_UPDATE false
+#endif
+
+// Interval for state updates in seconds (only used if STATE_UPDATE is true)
+#ifndef MQTT_DEFAULT_STATE_UPDATE_INTERVAL
+#define MQTT_DEFAULT_STATE_UPDATE_INTERVAL 60
+#endif
+
+// Connection timeout (ms) and keepalive (seconds)
+#ifndef MQTT_DEFAULT_TIMEOUT
+#define MQTT_DEFAULT_TIMEOUT 1000
+#endif
+
+#ifndef MQTT_DEFAULT_KEEPALIVE
+#define MQTT_DEFAULT_KEEPALIVE 60
+#endif