[FL-1549] Gui Widget module (#598)

* gui_widget: rework with mlib container
* widget: rename gui_widget-> widget; gui_element->widget_element
* gui: move widget from nfc to gui/modules
* nfc: rework widget usage
* nfc: return to ReadEmvAppSuccess scene after ReadEmvDataSuccess exit

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

applications/gui/modules/widget_elements/widget_element_string.c

@@ -0,0 +1,66 @@
+#include "widget_element_i.h"
+#include <m-string.h>
+
+typedef struct {
+    uint8_t x;
+    uint8_t y;
+    Align horizontal;
+    Align vertical;
+    Font font;
+    string_t text;
+} GuiStringModel;
+
+static void gui_string_draw(Canvas* canvas, WidgetElement* element) {
+    furi_assert(canvas);
+    furi_assert(element);
+    GuiStringModel* model = element->model;
+
+    if(string_size(model->text)) {
+        canvas_set_font(canvas, model->font);
+        canvas_draw_str_aligned(
+            canvas,
+            model->x,
+            model->y,
+            model->horizontal,
+            model->vertical,
+            string_get_cstr(model->text));
+    }
+}
+
+static void gui_string_free(WidgetElement* gui_string) {
+    furi_assert(gui_string);
+
+    GuiStringModel* model = gui_string->model;
+    string_clear(model->text);
+    free(gui_string->model);
+    free(gui_string);
+}
+
+WidgetElement* widget_element_string_create(
+    uint8_t x,
+    uint8_t y,
+    Align horizontal,
+    Align vertical,
+    Font font,
+    const char* text) {
+    furi_assert(text);
+
+    // Allocate and init model
+    GuiStringModel* model = furi_alloc(sizeof(GuiStringModel));
+    model->x = x;
+    model->y = y;
+    model->horizontal = horizontal;
+    model->vertical = vertical;
+    model->font = font;
+    string_init_set_str(model->text, text);
+
+    // Allocate and init Element
+    WidgetElement* gui_string = furi_alloc(sizeof(WidgetElement));
+    gui_string->parent = NULL;
+    gui_string->input = NULL;
+    gui_string->draw = gui_string_draw;
+    gui_string->free = gui_string_free;
+    gui_string->model = model;
+
+    return gui_string;
+}