* Integrate support for building with dependencies from vcpkg
Configure the build using -DUSE_VCPKG=ON to use vcpkg. By default
recommended triplets targeting the OS versions official builds support
are used. You can opt out of this with -DUSE_RECOMMENDED_TRIPLETS=OFF.
* Add the vcpkg manifest
* Fetch vcpkg with FetchContent if we don't have it
* macOS cross compiling fixes
- can't use the x86_64 one as host triplet on arm64 because building Qt
fails for whatever reason. Because of course it does :D
- vcpkg doesn't always like periods in triplet names so removed those
* x86_64 macOS should also use its recommended target when building arm64 builds
- When I adapted `GBACart::ParseROM` to use `unique_ptr` instead of a plain pointer, I forgot to remove the code that copied the SRAM data
- That code was made unnecessary because of the move
* Simplify the SRAM's representation in `NDSCartArgs`
- I overthought this one.
- I could've just checked `args && args->SRAM`, but then some other poor bastard might make this mistake.
- Don't mix `pair`, `optional`, and `unique_ptr` all at once, kids.
* Fix a `nullptr` read
* Fix detection of native NDS ARM BIOS images
- Instead of checking for built-in BIOS images, now the altered methods check for native ones
- The CRC32 must match exactly; patched BIOS images will result in `false`
* Encapsulate `NDS::ARM9BIOS` and `ARM7BIOS`
- Also compute the checksum only when setting the BIOS
* Allow 3D renderers to be created without passing `GPU` to the constructor
* Make the initial 3D renderer configurable via `NDSArgs`
* Fix a compiler error
* Sprinkle `const` around where appropriate
- This will make it easier to use `NDS` objects in `const` contexts (e.g. `const` parameters or methods)
* Remove the `const` qualifier on `DSi_DSP::DSPRead16`
- MMIO reads can be non-pure, so this may not be `const` in the future
