Improve wp-site-manager regarding WordPress 5.5 - Plugin and Theme autoupdates

[MartinWolfert]

It would be nice if the wp-site-manager would summarize the new "Plugin and Theme" autoupdate setting on one page.
To have a better overview please use two sliders "Plugins" and "Themes".

As it is planned for WordPress 5.5 today, Theme updates are somehow hidden: you have to open the Themes detail page to toggle autoupdates on or off.

Also a button to toggle on or off all updates for Themes and Plugins (see https://make.wordpress.org/core/2020/07/15/controlling-plugin-and-theme-auto-updates-ui-in-wordpress-5-5/) would be nice