[FL-2121] U2F GUI (#942)

* U2F: new gui
* U2F: user cert key encryption
* FuriCore: move type casting to dangerous_defines
* FuriCore: exclude dangerous things from furi.h

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>

applications/u2f/u2f.h

@@ -9,7 +9,10 @@ extern "C" {
 typedef enum {
     U2fNotifyRegister,
     U2fNotifyAuth,
+    U2fNotifyAuthSuccess,
     U2fNotifyWink,
+    U2fNotifyConnect,
+    U2fNotifyDisconnect,
 } U2fNotifyEvent;
 
 typedef struct U2fData U2fData;
@@ -30,6 +33,8 @@ uint16_t u2f_msg_parse(U2fData* instance, uint8_t* buf, uint16_t len);
 
 void u2f_wink(U2fData* instance);
 
+void u2f_set_state(U2fData* instance, uint8_t state);
+
 #ifdef __cplusplus
 }
 #endif