Reorganize project in multiple files for readability

src/config.h

@@ -0,0 +1,22 @@
+#ifndef CONFIG_H
+#define CONFIG_H
+
+#include <Arduino.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
+
+uint64_t joinEUI = 0x35f48318e1324e2e;
+uint64_t devEUI  = 0x0586fe41112d83d9;
+uint8_t  appKey[] = {
+  0x0b, 0x84, 0xb4, 0x04, 0x0f, 0xd5, 0x56, 0x1b, 
+  0x00, 0x53, 0x94, 0x22, 0xc1, 0xf1, 0x4f, 0xd6
+};
+uint8_t *nwkKey = appKey;
+
+#endif