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/string-element.h

@@ -0,0 +1,26 @@
+#pragma once
+#include "generic-element.h"
+
+class StringElement : public GenericElement {
+public:
+    StringElement();
+    ~StringElement() final;
+    void draw(Canvas* canvas) final;
+    bool input(InputEvent* event) final;
+
+    void set_text(
+        const char* text = NULL,
+        uint8_t x = 0,
+        uint8_t y = 0,
+        Align horizontal = AlignLeft,
+        Align vertical = AlignTop,
+        Font font = FontPrimary);
+
+private:
+    const char* text = NULL;
+    uint8_t x = 0;
+    uint8_t y = 0;
+    Align horizontal = AlignLeft;
+    Align vertical = AlignTop;
+    Font font = FontPrimary;
+};