video_core: Preliminary storage image support and more (#188)

* vk_rasterizer: Clear depth buffer when DB_RENDER_CONTROL says so

* video_core: Preliminary storage image support, more opcodes

* renderer_vulkan: a fix for vertex buffers merging

* renderer_vulkan: a heuristic for blend override when alpha out is masked

---------

Co-authored-by: psucien <bad_cast@protonmail.com>

src/shader_recompiler/runtime_info.h

@@ -126,6 +126,8 @@ struct Info {
     std::span<const u32> user_data;
     Stage stage;
 
+    bool uses_group_quad{};
+
     template <typename T>
     T ReadUd(u32 ptr_index, u32 dword_offset) const noexcept {
         T data;