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/view/elements/button-element.h

@@ -0,0 +1,28 @@
+#pragma once
+#include "generic-element.h"
+
+typedef void (*ButtonElementCallback)(void* context);
+
+class ButtonElement : public GenericElement {
+public:
+    ButtonElement();
+    ~ButtonElement() final;
+    void draw(Canvas* canvas) final;
+    bool input(InputEvent* event) final;
+
+    enum class Type : uint8_t {
+        Left,
+        Center,
+        Right,
+    };
+
+    void set_type(Type type, const char* text);
+    void set_callback(void* context, ButtonElementCallback callback);
+
+private:
+    Type type = Type::Left;
+    const char* text = nullptr;
+
+    void* context = nullptr;
+    ButtonElementCallback callback = nullptr;
+};