better logging

Author: dernasherbrezon

src/main/java/ru/r2cloud/lora/loraat/LoraAtSerialClient2.java

@@ -251,7 +251,9 @@ static String formatMessage(String message) {
 		if (message.startsWith(prefix)) {
 			message = message.substring(prefix.length());
 		}
-		message = message.substring(1); // I/E/W
+		if (message.startsWith("I ") || message.startsWith("W ") || message.startsWith("E ")) {
+			message = message.substring(1);
+		}
 		if (message.endsWith(suffix)) {
 			message = message.substring(0, message.length() - suffix.length());
 		}

src/test/java/ru/r2cloud/lora/loraat/LoraAtSerialClient2Test.java

@@ -173,6 +173,7 @@ public void testMessageFormat() {
 				(byte) 45, (byte) 97, (byte) 116, (byte) 58, (byte) 32, (byte) 114, (byte) 120, (byte) 32, (byte) 115, (byte) 116, (byte) 97, (byte) 114, (byte) 116, (byte) 101, (byte) 100, (byte) 32, (byte) 111, (byte) 110, (byte) 32, (byte) 52, (byte) 51, (byte) 54, (byte) 53, (byte) 53,
 				(byte) 48, (byte) 48, (byte) 48, (byte) 48, (byte) 27, (byte) 91, (byte) 48, (byte) 109, (byte) 32 };
 		assertEquals("(215215692) lora-at: rx started on 436550000", LoraAtSerialClient2.formatMessage(new String(data)));
+		assertEquals("OK", LoraAtSerialClient2.formatMessage(new String("OK")));
 	}
 
 	private static LoraObservationRequest createRequest() {