Android 15 Private Space Integration

[TSonono]

#2338

Note that this is a draft and not ready for review/merge.

This has the basic functionality for a usable Private Space integration.

What is supported:

• Unlock and lock the private space by pressing or long pressing the 3 dots in the KISS search bar and then press the applicable unlock/lock private space button.
• Private space apps are shown and openable in the KISS app list/searchable/history.

What is missing (first two bullets as per https://developer.android.com/about/versions/15/behavior-changes-all#private-space-launcher-apps):

• [ ] "separate launcher container for apps installed in the private space"
• [ ] "Install Apps" button that launches an implicit intent to install apps into the user's private space".
• [x] After private space has been disabled, the apps must be removed from the app list, history and search view rather than being greyed out, which is currently the case.
• [x] Perhaps an option to disable shortcuts from apps in the private space in the KISS search view. It can be annoying if there's an app in both the standard user and the private space that has a lot of shortcuts with shortcuts from both apps showing.

I might work on this on and off for some weekends a head. If someone else is implementing this, let me know so that I don't work on this in vain. If someone wants to continue the work of this PR (in what I would assume a quicker pace than I have time for), I would be fine with that too, just let me know.

[TBog]

Thank you for working on this!

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