Addresses review feedback.

MinGW has issues building tzdb2nx due to the headers being Windows
specific. Download for this toolchain as well.

Extra sanitization for Windows hosts, and fail loudly when the
download fails.

cmake: Fix status code reading

Fix for Flatpak being unable to download during CMake configure.

Fix for flatpak having no internet access during CMake configure.

Reference implementation does not compare the booleans as we had them.
Use the correct ones as in the reference.

Also adds an assert. I have been made aware of a crash here and am
not able to reproduce currently.

android: fs: Fix Exists / IsFile for SAF.

vulkan_device: disable extended_dynamic_state2 on ARM drivers

renderer_vulkan: propagate conditional barrier support

android: Support for Picture in Picture / Portrait

 vfs_real: add file LRU cache for open file limits 

externals: Fix update vcpkg to 2023.06.14

buffer_cache_base: Specify buffer type in HostBindings

Forgot to update the manifest to reflect the submodule in the previous commit.

android: Adapt EmulationActivity to navigation component

externals: update vcpkg to 2023.06.14

Since vcpkg doesn't set version numbers between releases, one was assigned in the proper format

core,common: Implement missing time zone data/computations

android: Declare languages in locales_config.xml

This is required to make per-app language swithcing possible on Android 13.