[FL-1424] NFC emulate CLI command (#514)

* nfc: move cli commands to separate file
* nfc: add nfc_emulate CLI command
* nfc: rework nfc emulate call from gui
* nfc: deactivate nfc state machine when exiting worker

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

applications/nfc/nfc_cli.h

@@ -0,0 +1,9 @@
+#pragma once
+
+#include <cli/cli.h>
+
+void nfc_cli_init();
+
+void nfc_cli_detect(Cli* cli, string_t args, void* context);
+
+void nfc_cli_emulate(Cli* cli, string_t args, void* context);