* this resolves the todo items in the CMakeLists.txt
* a version requirement check for ffmpeg is added to catch issues early
* for future-proof reasons, nasm/yasm is now only required when build on
x86/AMD64 systems
* when someone installed Intel video drivers on an AMD system, the
decoder will select the Intel VA-API decoding driver and yuzu will
crash due to incorrect driver selection; the fix will check if the
currently about-to-use driver is loaded in the kernel
* when using NVIDIA driver on Linux with a ffmpeg that does not have
CUDA capability enabled, the decoder will crash; the fix simply
making the decoder prefers the VDPAU driver over CUDA on Linux
* The web_service http request is now fixed on Windows (R) platform.
* The issue is due to a complicated race-condition in `httplib`, a detailed
explanation is available at https://github.com/yhirose/cpp-httplib/pull/701
* A pending Pull Request on `httplib` has been applied to remedy the
said race-condition.
* The socket availability check is removed due to a behavioral chice of
`httplib` that a socket will not be created before any actual request
is sent.
* A regression was in 39c8d18 and token verification function was
broken.
* The reason being `httplib` now requires OpenSSL 1.1+ API while
LibreSSL 2.x provided OpenSSL 1.0 compatible API.
* The bundled LibreSSL has been updated to 3.2.2 so it now provides
OpenSSL 1.1 compatible API now.
* Also the path hint has been added so that it will find the correct
path to the CA certs on *nix systems.
* An option is provided so that *nix system distributions/providers can
use their own SSL implementations when compiling Yuzu/Citra to
(hopefully) complies with their maintenance guidelines.
* LURLParse is also removed since `httplib` can handle
`scheme:host:port` string itself now.
liushuyu