non blocking - first review

- discord 0.8.5902
- stay longer on expected rx channel to wait for first frame 
- stick to looping over 5 channels for MI (after first frame or timeout)

src/hm/hmInverter.h

@@ -114,6 +114,7 @@ template <class REC_TYP>
 class Inverter {
     public:
         uint8_t       ivGen;             // generation of inverter (HM / MI)
+        uint8_t       ivRadioType;       // refers to used radio (nRF24 / CMT)
         cfgIv_t       *config;           // stored settings
         uint8_t       id;                // unique id
         uint8_t       type;              // integer which refers to inverter type