Sub-GHz: Choose RSSI threshold for Hopping mode

by Willy-JL

applications/main/subghz/subghz_last_settings.h

@@ -24,6 +24,7 @@ typedef struct {
     uint32_t filter;
     float rssi;
     bool delete_old_signals;
+    float hopping_threshold;
 } SubGhzLastSettings;
 
 SubGhzLastSettings* subghz_last_settings_alloc(void);