[Taranis] SWR implemented with popup when SWR > 0x33 (Tx antenna problem)

[Taranis] RSSI/A1/A2 alarms
[Taranis] Better code when no pulses sent (internal or external module). Thanks Mike!
[Taranis] Correction on DEBUG serial code

src/telemetry/frsky.cpp

@@ -61,7 +61,7 @@ uint8_t frskyTxBuffer[FRSKY_TX_PACKET_SIZE];   // Ditto for transmit buffer
 #if !defined(CPUARM)
 uint8_t frskyTxBufferCount = 0;
 #endif
-int8_t frskyStreaming = -1;
+uint8_t frskyStreaming = 0;
 #if defined(WS_HOW_HIGH)
 uint8_t frskyUsrStreaming = 0;
 #endif