kernel: Various improvements to scheduler

Fix LAN Play

decoders: Optimize memcpy for the other functions

threadsafe_queue: Fix deadlock

- This would have limited value, and would be a mess to handle properly.

This fixes a lost wakeup in SPSCQueue. If the reader is in just the right position, the writer's notification will be lost and this will be a problem if the writer then does something to wait on the reader.

This was discovered to affect my upcoming stacktrace PR. I don't think any performance decrease will be noticeable because an uncontended mutex is smart enough to skip the syscall. This PR might also resolve some rare deadlocks but I don't know of any examples.

The header "combaseapi.h" of mingw-w64 defines "interface" as "struct".

input_common: Disable sdl raw input mode

GetAvailableNetworkInterfaces

network interface combobox

This commit renames the "Services" tab to "Network" and adds a combobox that allows the user to select the network interface that yuzu should use. This new setting is now used to get the local IP address in Network::GetHostIPv4Address. This prevents yuzu from selecting the wrong network interface and thus using the wrong IP address. The return type of Network::GetHostIPv4Adress has also been changed.

vic: Specify sws_scale height stride.

externals: Update sdl2 to 2.0.16

settings: Fix MSVC issues

According to https://stackoverflow.com/questions/469508, we run into a
MSVC bug (since VS 2005) when using diamond inheritance for
RangedSetting.

This explicitly implements those functions in RangedSetting. GetValue is
implemented as just calling the inherited version. The explicit
converson operator is reimplemented. I opted for this over ignoring the
warning with a pragma since this specifies the inherited behavior, and I
have now less faith in MSVC to pick the right one.

In addition, we mark destructors as virtual to silence what I believe is
a fair MSVC compilation error.

settings: Implement settings ranges

texture_cache: Split out template definitions

main: Avoid stopping emulation when taking a screenshot

Silences a sws_scale runtime warning about unaligned strides.

memory: Clean up code

configure_general: Swap positions of speed limit and frame limit options

vp9: Ensure the first frame is complete

yuzu-cmd/CMakeLists: Correct attribution for this function.