[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>

lib/micro-ecc/LICENSE.txt

@@ -0,0 +1,21 @@
+Copyright (c) 2014, Kenneth MacKay
+All rights reserved.
+
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+are permitted provided that the following conditions are met:
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