[FL-1958] U2F prototype (#879)

* U2F implementation prototype
* U2F data encryption and store, user confirmation request
* remove debug prints
* fix notification bug in chrome
* split u2f_alloc into u2f_init and u2f_alloc
* typo fix, furi-hal-trng -> furi-hal-random
* rand/srand redefinition
* SubGhz: a little bit of Dante.
* u2f_data naming fix

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

applications/u2f/u2f_data.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <furi.h>
+
+bool u2f_data_cert_check();
+
+uint32_t u2f_data_cert_load(uint8_t* cert);
+
+bool u2f_data_cert_key_load(uint8_t* cert_key);
+
+bool u2f_data_key_load(uint8_t* device_key);
+
+bool u2f_data_key_generate(uint8_t* device_key);
+
+bool u2f_data_cnt_read(uint32_t* cnt);
+
+bool u2f_data_cnt_write(uint32_t cnt);
+
+#ifdef __cplusplus
+}
+#endif