Stub VkPipelineMultisampleStateCreateInfo

Multisampling will be worked on later and for the time being is being safely stubbed by setting the sample count to 1.

app/src/main/cpp/skyline/gpu/interconnect/graphics_context.h

@@ -1108,5 +1108,9 @@ namespace skyline::gpu::interconnect {
                 }
             }();
         }
+
+        /* Multisampling */
+        vk::PipelineMultisampleStateCreateInfo multisampleState{
+            .rasterizationSamples = vk::SampleCountFlagBits::e1,
         };
 }