* [libexif] Update to 0.6.22
From the release page on github:
> It largely contains stability, security and bugfixes.
>
> Some EXIF 2.3 tags have been added.
>
> It is ABI compatible to 0.6.21 release.
* [libexif] Fixes to portfile.cmake
- don't include vcpkg_commong_functions
- use the PORT variable when installing copyright file
* [libexif] Use vcpkg_fail_port_install
Co-authored-by: Oskari Timperi <oskari.timperi@novatron.fi>
* [libexif] update download location
* [libexif] Update homepage & switch to vcpkg_from_github
* [libexif] add missing _stdint.h file via patch mechanism
* [libexif] actually include modifications to tell it to use the patch file