Without the CONFIG option, find_package will perform Module search. On
at least Linux Mint 20 (I'm unable to reproduce this on CentOS and Arch
Linux), my guess is that this causes CMake to find "dirty" modules that
modify the configuration state despite the Boost version being too
low/absent.

Use CONFIG to put CMake into pure Config mode and avoid Module search.

vk_texture_cache: Swap R and B channels of color flipped format

Swaps the Red and Blue channels of the A1B5G5R5_UNORM texture format, which was being incorrectly rendered.

ICommonStateGetter: Stub SetRequestExitToLibraryAppletAtExecuteNextProgramEnabled

glue: Add ectx:aw service placeholder

program_metadata: Set a default resource size when a NPDM is not present

program_metadata: Explicitly specify copy/move operators/functions

- Used by Pixel Game Maker Series Werewolf Princess Kaguya

lm: Resolve -Wextra-semi warning

acc/lbl: Remove unused variables

aes_util: Make use of std::span

Sets a default size of 0x1FE00000 bytes (510 MiB) for the system_resource_size when a NPDM is not present.

emu_window: unsigned -> u32

This is only a 2-tuple, so it can be converted over to the std::pair
class.

This is more concise and consistent with the rest of the codebase.

Allows us to simplify the interface quite a bit as it will handle
contiguous sequences for us.

Avoids unnecessary default construction of an entry in cases where no
entry exists before overwriting the created entry.

We can perform the lookup and then do the contains check by checking the
end iterator. The benefit of this is that if we *do* find an entry, then
we aren't hashing into the map again to find it.

We can also get rid of an unused std::vector temporary while we're at
it.

Resolves a trivial warning with clang.

The generation of the copy assignment operators are deprecated on being
generated when a user-provided destructor is present.

We can explicitly specify that we desire this behavior to keep the class
forward compatible with future standards.

yuzu_cmd: Remove unused resource.h

service: hid: Get transfer memory for InitializeSevenSixAxisSensor

cmake: Download Boost from ext-linux-bin if inadequate local version

Building SDL2 from externals is incompatible with Conan's version of
libiconv, a requirement of Conan's Boost package. Solution is to use the
same Boost package in use by the linux-fresh container. This tells CMake
to download boost_1_75_0.tar.xz from yuzu-emu/ext-linux-bin at CMake's
configuration step, much the same way Qt and FFmpeg are downloaded for
Windows.

Also makes DownloadExternals.cmake cross-platform. Although the CMake
code is not entirely specific to Linux, only Linux has Boost libraries
available at ext-linux-bin, whereas there is no equivalent Boost package
for Windows at ext-windows-bin. caveat emptor

cmake: Fix FFmpeg external usage and cleanup 

time: Fix GetClockSnapshotFromSystemClockContext

If SDL2 is not found, the error is handled by falling back to externals.
No need spill the full warning at the find_package if it's going to be
handled later, so add QUIET to it.

Sets find_package(FFmpeg) to QUIET instead of REQUIRED. This allows
using the FFmpeg external in cases where there is no suitable installed
version of FFmpeg.

Also fixes a bug where multiple CMake configures causes FFmpeg_LIBRARIES
to concatenate on itself, producing cyclical dependencies. Unsets the
variable before building it in the foreach loop.

Fixes FFmpeg_INCLUDE_DIR not including the headers generated at run
time.

log/backend: Make use of erase_if

texture_cache/util: Fix src being used instead of dst within DeduceBlitImages case

cmake: Use SDL 2.0.14 and fix scope issue

We can also avoid redundant constructions of the same string repeatedly.

Same behavior, but less verbose.

general: Write buffers before pushing raw arguments

npad: Remove duplicated class member variable

arp: Prevent potential uninitialized read of launch member variable