New LF-RFID app (#534)

* Hal lfrfid: add read timer pulse and period config fns
* New debug application for lfrfid subsystem
* New lfrfid: app, fix naming
* App lfrfid: assets
* Container view module
* App ibutton: remove unused header
* App lfrfid scenes
* App notification, add yield to blocking operations, add speaker volume control
* App lfrfid: reading key scene
* Assets: placeholder icon
* App lfrfid: reworked container view module
* App lfrfid: new scenes
* App lfrfid: write scene
* App lfrfid: write hid
* App lfrfid: emulate scene
* App lfrfid: save name scene
* App lfrfid: add missing file

applications/lfrfid/helpers/rfid-worker.h

@@ -0,0 +1,46 @@
+#pragma once
+#include "key-info.h"
+#include "rfid-reader.h"
+#include "rfid-writer.h"
+#include "rfid-timer-emulator.h"
+#include "rfid-key.h"
+#include "state-sequencer.h"
+
+class RfidWorker {
+public:
+    RfidWorker();
+    ~RfidWorker();
+
+    void start_read();
+    bool read();
+    void stop_read();
+
+    enum class WriteResult : uint8_t {
+        Ok,
+        NotWritable,
+        Nothing,
+    };
+
+    void start_write();
+    WriteResult write();
+    void stop_write();
+
+    void start_emulate();
+    void stop_emulate();
+
+    RfidKey key;
+
+private:
+    RfidWriter writer;
+    RfidReader reader;
+    RfidTimerEmulator emulator;
+
+    WriteResult write_result;
+    TickSequencer* write_sequence;
+
+    void sq_write();
+    void sq_write_start_validate();
+    void sq_write_validate();
+    uint8_t validate_counts;
+    void sq_write_stop_validate();
+};