Rasterizer: Setup skeleton for Host Conditional rendering

src/video_core/rasterizer_interface.h

@@ -127,6 +127,10 @@ public:
     /// Notify rasterizer that a frame is about to finish
     virtual void TickFrame() = 0;
 
+    virtual bool AccelerateConditionalRendering() {
+        return false;
+    }
+
     /// Attempt to use a faster method to perform a surface copy
     [[nodiscard]] virtual bool AccelerateSurfaceCopy(
         const Tegra::Engines::Fermi2D::Surface& src, const Tegra::Engines::Fermi2D::Surface& dst,