Feature Request: Remember state of "Show Disabled" button, show a count of disabled remotes?

[nekohayo]

• My proposal does not exist in the PLANNED & NOT PLANNED.md document
• I have not found any other opened issues on the same feature request
• I believe this fits within Warehouse's scope of Flatpak management

Describe the feature idea in detail

Here are two minor UX suggestions for the "Remotes" page:

• Automatically remember the last state of the "Show Disabled" togglebutton
  (like the fact that Warehouse remembers the state of filters (apps vs runtimes) in the "Packages" page)

• The "Show Disabled" togglebutton's label doesn't really let you know that there are disabled items when they are not shown.
  I would suggest adding a count in it, i.e. Show %d Disabled where %d is the live-updated count of disabled remotes.