refacto: change lora to class with ITransmitter interface

lib/Transmitter/ITransmitter.h

@@ -0,0 +1,11 @@
+#pragma once
+#include <stdint.h>
+#include <stddef.h>
+
+class ITransmitter {
+public:
+    virtual ~ITransmitter() = default;
+    virtual void init() = 0;
+    virtual void join() = 0;
+    virtual void send(uint8_t* payload, size_t size) = 0;
+};