AchievementApprovedHash: Automatically generate hash using CMake

This introduces a CMakePresets file for both Unix-likes and Windows that replace the old CMakeSettings.

It adds presets for **Debug** and **Release** profiles for both **x64** and **ARM64** architectures, as well as **Generic builds**.
Presets can be used using[ Visual Studio's built-in CMakePresets support](https://learn.microsoft.com/en-us/cpp/build/cmake-presets-vs?view=msvc-170), or [Visual Studio Code's CMake Tools](https://marketplace.visualstudio.com/items?itemName=ms-vscode.cmake-tools) extension.

They can also be used from the command line, like so:

- x64/Unix-like/Ninja:
  - Configure: `cmake --preset ninja-release-x64`
  - Build: `cmake --build --preset ninja-build-release-x64`
  - Configure + Build: `cmake --workflow --preset ninja-release-x64`
- ARM64/Windows/Visual Studio:
  - Configure: `cmake --preset visualstudio-release-arm64`
  - Build: `cmake --build --preset visualstudio-build-release-arm64`
  - Configure + Build: `cmake --workflow --preset visualstudio-release-arm64`

The Ninja generator is available to both Windows and Unix-likes, while the Visual Studio Generator is only available on Windows.

**Cross-compiling**

On **Windows**, the Visual Studio generator automatically takes care of everything, you just need to select an ARM64 preset.

On **Unix-likes**, to cross-compile you need to install a cross-compiler and (optionally) a sysroot of the target system.
Here is an example to compile from x64 to ARM64 with a sysroot:

- `cmake --preset ninja-release-arm64 -DCMAKE_C_COMPILER=aarch64-linux-gnu-gcc -DCMAKE_CXX_COMPILER=aarch64-linux-gnu-g++ -DCMAKE_SYSROOT=/opt/sysroots/aarch64-linux-gnu`
- `cmake --build --preset ninja-build-release-arm64`

You will need a sysroot to link against Qt, since we do not vendor it in on platforms other than Windows.

**User presets**

A `CMakeUserPresets.json` file may be created locally at the root of the project to further customize your presets.
For example, here are the user presets I used to test this PR on Arch Linux with a generic Arch Linux ARM sysroot:

```json
{
  "version": 10,
  "configurePresets": [
    {
      "name": "gcc-debug-arm64",
      "inherits": "ninja-debug-arm64",
      "cacheVariables": {
        "CMAKE_C_COMPILER": "aarch64-linux-gnu-gcc",
        "CMAKE_CXX_COMPILER": "aarch64-linux-gnu-g++",
        "CMAKE_EXE_LINKER_FLAGS": "-L/opt/sysroots/ArchLinuxARM/lib",
        "CMAKE_SYSROOT": "/opt/sysroots/ArchLinuxARM"
      }
    },
    {
      "name": "clang-debug-arm64",
      "inherits": "ninja-debug-arm64",
      "cacheVariables": {
        "CMAKE_C_COMPILER": "clang",
        "CMAKE_CXX_COMPILER": "clang++",
        "CMAKE_C_FLAGS": "-target aarch64-linux-gnu",
        "CMAKE_CXX_FLAGS": "-target aarch64-linux-gnu",
        "CMAKE_SYSROOT": "/opt/sysroots/ArchLinuxARM"
      }
    },
    {
      "name": "clang-debug-x64",
      "inherits": "ninja-debug-x64",
      "cacheVariables": {
        "CMAKE_C_COMPILER": "clang",
        "CMAKE_CXX_COMPILER": "clang++"
      }
    }
  ],
  "buildPresets": [
    {
      "name": "gcc-build-debug-arm64",
      "configurePreset": "gcc-debug-arm64"
    },
    {
      "name": "clang-build-debug-arm64",
      "configurePreset": "clang-debug-arm64"
    },
    {
      "name": "clang-build-debug-x64",
      "configurePreset": "clang-debug-x64"
    }
  ],
  "workflowPresets": [
    {
      "name": "gcc-debug-arm64",
      "steps": [
        { "type": "configure", "name": "gcc-debug-arm64" },
        { "type": "build", "name": "gcc-build-debug-arm64" }
      ]
    },
    {
      "name": "clang-debug-arm64",
      "steps": [
        { "type": "configure", "name": "clang-debug-arm64" },
        { "type": "build", "name": "clang-build-debug-arm64" }
      ]
    },
    {
      "name": "clang-debug-x64",
      "steps": [
        { "type": "configure", "name": "clang-debug-x64" },
        { "type": "build", "name": "clang-build-debug-x64" }
      ]
    }
  ]
}
```

They are then used like so:
Configure + Build with GCC: `cmake --workflow --preset gcc-debug-arm64`
Configure + Build with Clang: `cmake --workflow --preset clang-debug-arm64`
Configure + Build with Clang (x64): `cmake --workflow --preset clang-debug-x64`

*Addendum: It should also now be possible to cross-compile from Windows to Unix-likes, and Unix-like to other Unix-like (e.g. Linux -> FreeBSD), however this is untested.*

Externals: Fix clashing dependencies

Our FindLibUSB.cmake was previously entirely unused unless SDL was being built from Externals, we now rely on it again. It will use PkgConfig if applicable or fall back to looking around on the system, and more importantly it will always create an imported target.