chore: make yuzu REUSE compliant

As mentioned in the previous commit, `reuse lint` can be used to ensure
that copyright information is always present and up to date.

This adds a GitHub Action that does just that, using the official
fsfe/reuse-action

[REUSE] is a specification that aims at making file copyright
information consistent, so that it can be both human and machine
readable. It basically requires that all files have a header containing
copyright and licensing information. When this isn't possible, like
when dealing with binary assets, generated files or embedded third-party
dependencies, it is permitted to insert copyright information in the
`.reuse/dep5` file.

Oh, and it also requires that all the licenses used in the project are
present in the `LICENSES` folder, that's why the diff is so huge.
This can be done automatically with `reuse download --all`.

The `reuse` tool also contains a handy subcommand that analyzes the
project and tells whether or not the project is (still) compliant,
`reuse lint`.

Following REUSE has a few advantages over the current approach:

- Copyright information is easy to access for users / downstream
- Files like `dist/license.md` do not need to exist anymore, as
  `.reuse/dep5` is used instead
- `reuse lint` makes it easy to ensure that copyright information of
  files like binary assets / images is always accurate and up to date

To add copyright information of files that didn't have it I looked up
who committed what and when, for each file. As yuzu contributors do not
have to sign a CLA or similar I couldn't assume that copyright ownership
was of the "yuzu Emulator Project", so I used the name and/or email of
the commit author instead.

[REUSE]: https://reuse.software

Follow-up to 01cf05bc

externals: Use GitHub for FFmpeg

FFmpeg's own git repo seems to be down, so switch to GitHub like we use
for most externals.

yuzu, network: Add room service and UI configuration

Co-Authored-By: Narr the Reg <5944268+german77@users.noreply.github.com>

yuzu: Streamline broken Vulkan handling

kernel: use KScheduler from Mesosphere

service: irs: Add camera support, split processors and implement ImageTransferProcessor

Project Andio

ci,transifex: enable vcpkg on transifex step

ci: pass environment variables to linux docker (AppImage)

package MSVC CI Builds differently, and include yuzu.exe

The slim docker container that runs transifex needs a few packages added
in, curl zip unzip

I've tested everything except actually pushing to transifex, but it's
not November 2022 yet so we're fine for now. Or we're actually using the
newer client and all is well.

ci/windows: Cleanup unused data in submodules before packaging

This is related to 8486

Ninja places the exe files into .\build\bin while MSBuild may place them
into .\build\bin\Release

upload.ps1 was originally written for use with Azure Dev Ops to cough up
about 5 files and the script appears to be used for both CI and
mainline builds

GHA (GitHub Actions) makes available a single zip of the items uploaded by
each Upload action (artifacts directory), so we want to work with that.

I'm doing changes to upload.ps1 to accomplish this.

The changes to the verify.yml are as follows

-DGIT_BRANCH=pr-verify changes the header in yuzu, instead of saying
HEAD-<hash>-dirty it'll say pr-verify-<hash>

-DCLANG_FORMAT_SUFFIX=discordplzdontclang tricks the CMake stuff for
discord-rpc to NOT run clang-format, as this was marking CI builds as
dirty

I'm also making it upload just the exe by itself, as the msvc builds are
quite chunky. but maybe this is unnecessary.

Currently the MSVC artifact option is a 274MB zip that contains 3 copies
of the DLLs, and 4 copies of the source tarball, and zero copies of yuzu.exe

This PR should have msvc artifacts of about 190MB that downloads as 81 MB zip

vcpkg data takes up a lot of space, and currently the scripts will
package all that data with the source archive which is unnecessary.

CMakeLists: Require QtConcurrent, and remove unused dlls

Variables in question:
AZURECIREPO TITLEBARFORMATIDLE TITLEBARFORMATRUNNING DISPLAYVERSION

CMakeModules/GenerateSCMRev.cmake has some logic that looks at BUILD_REPOSITORY variable inside CMake

src/common/CMakeLists.txt has some logic that takes some items from environment variables and
 sets variables inside CMake

This is the whole section at the moment.

    if (DEFINED ENV{AZURECIREPO})
      set(BUILD_REPOSITORY $ENV{AZURECIREPO})
    endif()
    if (DEFINED ENV{TITLEBARFORMATIDLE})
      set(TITLE_BAR_FORMAT_IDLE $ENV{TITLEBARFORMATIDLE})
    endif ()
    if (DEFINED ENV{TITLEBARFORMATRUNNING})
      set(TITLE_BAR_FORMAT_RUNNING $ENV{TITLEBARFORMATRUNNING})
    endif ()
    if (DEFINED ENV{DISPLAYVERSION})
      set(DISPLAY_VERSION $ENV{DISPLAYVERSION})
    endif ()