Insert ribbon: Import panel

Import File split button (PDF Import / DGN Import / Import), Recognize
SHX Text, Recognition Settings and Combine Text; Land XML moves to the
panel slide-out and Open leaves the panel. Ribbon commands may be menu
macros (`;` answers the running command's prompt). KeyTips IF, PI, DI,
OI, PS, PT, TM; labels in every locale.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

locales/ru-RU/opencadstudio.ftl

@@ -6598,3 +6598,11 @@ ucs-follow =
     .prompt = UCSFOLLOW: enter 0 (keep view) or 1 (follow UCS) <__ocs_fmt_0__>:
     .paper-space = UCSFOLLOW: activate a model viewport; paper space cannot follow the UCS.
     .invalid = UCSFOLLOW: only 0 or 1 is allowed.
+
+import-panel =
+    .dgn-import = Импорт DGN
+    .recognize-shx = Распознать текст SHX
+    .recognition-settings = Параметры распознавания
+    .combine-text = Объединить текст
+    .land-xml = Land XML
+    .import-file-header = Импорт файла — кнопка запускает последний выбранный пункт