Wait for pipeline compilation to finish before loading the guest

The excessive blocking caused by initial compilation happening async to the guest caused issues in some cases, now we have a Vulkan pipeline cache to speed it up we can wait for a full compile before launch without too many issues.

app/src/main/cpp/skyline/gpu/interconnect/maxwell_3d/pipeline_manager.cpp

@@ -933,8 +933,11 @@ namespace skyline::gpu::interconnect::maxwell3d {
                 #endif
             }
 
+            gpu.graphicsPipelineAssembler->WaitIdle();
             Logger::Info("Loaded {} graphics pipelines in {}ms", map.size(), (util::GetTimeNs() - startTime) / constant::NsInMillisecond);
 
+            gpu.graphicsPipelineAssembler->SavePipelineCache();
+
             #ifdef PIPELINE_STATS
             for (auto &[key, list] : sharedPipelines) {
                 sortedSharedPipelines.push_back(&list);