applet_error: Fix 64-bit error code conversion

Replace QPoint with QPointF where applicable

Previously, floats were implicitly cast to integers

qt_software_keyboard: fix copy-paste error

Fix crash in logging in CreateStrayLayer

It was trying to log value of layer_id which is specifically known not to exist, potentially leading to segfault. Log display_id instead.

Fix check is thread current in GetThreadContext

Misplaced break made it only check for the first core.

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