Add Element Text Format Painter tool

- Implement ElementTextFormatPattern to capture and reapply dynamic element text formats (font, color, alignment, rotation, frame, positions, groups) across elements.
- When applying a format, missing ElementInfo texts present on the source template are added to the target element with the template's layout and styling, matching other texts in order.
- Register actions under Edit menu, diagram context menu, and ShortcutManager (customizable via Toolbar settings).
- Bind default shortcuts Ctrl+Alt+C (copy text format) and Ctrl+Alt+V (apply text format).
- Provide full undo/redo support via ApplyElementTextFormatCommand.
- Add SVG icons format-copy and format-apply.
- Include English source strings and German/French translations.

sources/qeticons.cpp

@@ -75,6 +75,8 @@ namespace QET {
 		QIcon EditDelete;
 		QIcon EditOpacity;		
 		QIcon EditPaste;
+		QIcon CopyElementTextFormat;
+		QIcon ApplyElementTextFormat;
 		QIcon EditRedo;
 		QIcon EditRename;
 		QIcon EditSelectAll;
@@ -464,6 +466,8 @@ void QET::Icons::initIcons()
 	EditDelete          = QIcon::fromTheme("edit-delete");
 	EditOpacity         = QIcon::fromTheme("edit-opacity");
 	EditPaste           = QIcon::fromTheme("edit-paste");
+	CopyElementTextFormat = QIcon(":/ico/format-copy.svg");
+	ApplyElementTextFormat = QIcon(":/ico/format-apply.svg");
 	if (rtl) {
 		EditRedo.addPixmap(QIcon::fromTheme("edit-redo").pixmap(16).transformed(reverse));
 		EditRedo.addPixmap(QIcon::fromTheme("edit-redo").pixmap(22).transformed(reverse));