Target Android 16

[TheLastProject]

We're just done with Android 15, but 16 is now "stable enough to be targetable".

All Android 16 devices

(See https://developer.android.com/about/versions/16/behavior-changes-all)

Intent security changes

(See https://developer.android.com/about/versions/16/behavior-changes-all#intent-redirect-attacks)

I don't expect these to affect Catima, but we should still check.

Targeting 16

(See https://developer.android.com/about/versions/16/behavior-changes-16)

Ignoring orientation changes

(See https://developer.android.com/about/versions/16/behavior-changes-16#ignore-orientation)

This will break some stuff. Because this is targetSdk based, it will also break this on older Android devices sadly.

• Remove "Screen orientation" feature, as it will no longer be possible to support this feature.
• Unlock rotation on the import/export screen, add a warning to "please don't rotate your screen" as it'll kill the import. See d24366a.

[TheLastProject]

It's even worse: screen orientation is only no longer supported on "big devices" (sw600p and up). The documentation on this is rather scarce, it seems to be mostly tablets? But it wouldn't surprise me if some foldables are affected too. Inconsistent support is the absolute worst. Why, Google, why :(