[android] Legacy build flavor (#51)

This adds a "legacy" build flavor, similar to the genshinSpoof flavor. The legacy flavor uses a white icon bg, alongside building with `YUZU_LEGACY=ON`, which applies the previously-made SD865 patches iff that value is truthy.

Co-authored-by: Bixthefin <114880614+Bixthefin@users.noreply.github.com>
Co-authored-by: Calchan <denis.dupeyron@gmail.com>
Co-authored-by: crueter <crueter@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/51
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-by: crueter <crueter@eden-emu.dev>
Co-authored-by: Bix <bix@bixed.xyz>
Co-committed-by: Bix <bix@bixed.xyz>

src/video_core/vulkan_common/vulkan_memory_allocator.cpp

@@ -325,4 +325,6 @@ namespace Vulkan {
         return MemoryCommit(allocator, a, info);
     }
 
+
+
 } // namespace Vulkan