show(run) theme-install.php to pages

Hi
I know there is a way that
(theme-install.php) in the management and WordPress Themes
Transferred to a page
View and search the wordpress themes
Outside the WordPress Admin
With reference to the site and did a page
Or is there a command that can
To access the link (ww.wp.xz.cn / extend / themes) on page
And selected themes
Or a widget or plugin that such a facility could
Thank you, I’ll lead