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.cpp

@@ -0,0 +1,35 @@
+#include "string-element.h"
+
+StringElement::StringElement() {
+}
+
+StringElement::~StringElement() {
+}
+
+void StringElement::draw(Canvas* canvas) {
+    if(text) {
+        canvas_set_font(canvas, font);
+        canvas_draw_str_aligned(canvas, x, y, horizontal, vertical, text);
+    }
+}
+
+bool StringElement::input(InputEvent* event) {
+    return false;
+}
+
+void StringElement::set_text(
+    const char* _text,
+    uint8_t _x,
+    uint8_t _y,
+    Align _horizontal,
+    Align _vertical,
+    Font _font) {
+    lock_model();
+    text = _text;
+    x = _x;
+    y = _y;
+    horizontal = _horizontal;
+    vertical = _vertical;
+    font = _font;
+    unlock_model(true);
+}