refacto: change lora to class with ITransmitter interface

lib/Transmitter/LoRaTransmitter.h

@@ -0,0 +1,47 @@
+#pragma once
+#include <ITransmitter.h>
+#include <SPI.h>
+#include <RadioLib.h>
+#include <Preferences.h>
+#include <config.h>
+
+#define LORA_SCK  5
+#define LORA_MISO 19
+#define LORA_MOSI 27
+#define LORA_NSS  18
+#define LORA_RST  23
+#define LORA_DIO0 26
+#define LORA_DIO1 33
+
+class LoRaTransmitter : public ITransmitter {
+public:
+    LoRaTransmitter(
+        uint64_t joinEUI,
+        uint64_t devEUI,
+        uint8_t* nwkKey,
+        uint8_t* appKey
+    );
+
+    void init()                              override;
+    void join()                              override;
+    void send(uint8_t* payload, size_t size) override;
+
+private:
+    uint64_t _joinEUI;
+    uint64_t _devEUI;
+    uint8_t  _nwkKey[16];
+    uint8_t  _appKey[16];
+
+    SX1276      _radio;
+    LoRaWANNode _node;
+    Preferences _prefs;
+
+    uint8_t _noncesBuffer[RADIOLIB_LORAWAN_NONCES_BUF_SIZE];
+
+    void    _reset();
+    void    _restoreDevNonce();
+    void    _persistDevNonce();
+    int16_t _restoreSession();
+    void    _saveSession();
+    int16_t _fullJoin();
+};