patch 9.0.1799: Russian menu translation can be improved

Problem:  Russian menu translation can be improved
Solution: update the Russian menu files

closes: #12903

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: RestorerZ <restorer@mail2k.ru>
diff --git a/runtime/lang/menu_ru.vim b/runtime/lang/menu_ru.vim
new file mode 100644
index 0000000..20b0b2d
--- /dev/null
+++ b/runtime/lang/menu_ru.vim
@@ -0,0 +1,3 @@
+" Menu Translations:	Russian
+
+source <sfile>:p:h/menu_ru_ru.vim