add : ajoute la bibliothèque LoRaTransmitter pour envoyer les données

lib/Transmitter/ITransmitter.h

@@ -0,0 +1,18 @@
+#pragma once
+#include <stdint.h>
+#include <stddef.h>
+
+enum class TransmitError : int16_t {
+    OK           =  0,
+    INIT_FAILED  = -1,
+    JOIN_FAILED  = -2,
+    SEND_FAILED  = -3,
+};
+
+class ITransmitter {
+public:
+    virtual ~ITransmitter() = default;
+    virtual TransmitError init() = 0;
+    virtual TransmitError join() = 0;
+    virtual TransmitError send(uint8_t* payload, size_t size) = 0;
+};