Added Melody Struct & Ajusted MQTT Subs and Deserialization

A new Melody Struct was added containing the melody's main attributes.
The MQTT Topic Subscriptions were updated to a more proper format.
Also added DEV_ID that corresponds to the device's ID or Serial Number.
Chnaged the Deserialization function to actually adjust the MelodyStruct's attributes.
Added basic play/stop functionality.

vesper.ino

@@ -1,31 +1,55 @@
-#
-
 #include <WiFi.h>
 #include <AsyncMqttClient.h>
 #include <ArduinoJson.h>
+#include <FS.h>
+#include <SPIFFS.h>
+#include <string>
 
+#define DEV_ID "id-96638646"
+
+struct melody_attributes {
+  std::string name;                   // Contains the name of each Melody saved
+  uint16_t id;						  // The (internal) ID of the selected melody
+  uint32_t duration;                  // Indicates the total Duration in Minutes
+  bool infinite_play;                 // Infinite Loop Indicator (If True the melody will loop forever or until stoped, with pauses of "interval duration in between loops")
+  uint16_t interval_duration;         // Indicates the Duration of the Interval between finished loops, IF "inf" is true
+  uint8_t speed;                      // Indicates the Speed in 9 Steps. 1-9 (Steps can be adjusted in the bellEngine function)
+};
+
+melody_attributes melody;
+
+volatile bool playing = false;
+
+#include "functions.hpp"
 #include "config.h"  // Sustituir con datos de vuestra red
-#include "JSON_functions.hpp"
 #include "MQTT.hpp"
 #include "ESP32_Utils.hpp"
 #include "ESP32_Utils_MQTT_Async.hpp"
+#include "melody_handling.hpp"
 
 
 void setup()
 {
+  // Initialize Serial Communication (for debuggin)
 	Serial.begin(115200);
+  delay(50);
 
-	delay(500);
-
+  // Initialize SPIFFS
+  if (!SPIFFS.begin(true)) {  // 'true' means format SPIFFS if initialization fails
+    Serial.println("Failed to mount SPIFFS");
+    return;
+  }
+  Serial.println("SPIFFS mounted successfully");
+	delay(50);
+  
+  // Initialize WiFi and MQTT
 	WiFi.onEvent(WiFiEvent);
 	InitMqtt();
-
 	ConnectWiFi_STA();
+  delay(1000);
+
 }
 
 void loop()
 {
-	// EXAMPLE PUBLISH. CHANGE THIS, IF NEEDED. 
-  //delay(1000);
-	//PublishMqtt(millis());
 }