Move serial baud rate to config

config.h

@@ -1,3 +1,5 @@
+#define SERIAL_BAUD_RATE      115200
+
 // change pinouts if not defined through native board LORA_* definitions
 #ifndef LORA_RST
 #pragma message("LoRa pin definitions are not found, redefining...")

esp32_loraprs.ino

@@ -72,7 +72,7 @@ void setup() {
   pinMode(BUILTIN_LED, OUTPUT);
   digitalWrite(BUILTIN_LED, 1);
 
-  Serial.begin(115200);
+  Serial.begin(SERIAL_BAUD_RATE);
   while (!Serial);
   
   LoraPrs::Config config;