Register radio invitation service and shared core events

src/chat/chat_event.h

@@ -87,6 +87,7 @@ extern "C" {
 #define CHAT_EVT_LOCAL_INVITE 62 /* [node:8BE][name_len:1][name:UTF8][invite_link:UTF8], без NUL */
 #define CHAT_EVT_LOCAL_DELIVERY 63 /* [request:8BE][node:8BE][status:1], local_delivery_status, не результат JOIN */
 #define CHAT_EVT_LOCAL_DISCOVERY_ACTIVE 64 /* [active:1], Android MulticastLock */
+#define CHAT_EVT_RADIO_CALL 65 /* [id:8LE][group:8LE][peer:8LE][state:1][reason:1][incoming:1], radio_call.h */
 
 typedef void (*chat_event_handler_fn)(struct UTUN_INSTANCE* inst, int type, const uint8_t* data, int len);