perf: 增加PSO缓存相关内容

.gitignore

@@ -5,6 +5,7 @@ Saved
 Build
 Documents
 Package
+Cache
 .vscode
 .vs
 *.VC.db

Config/DefaultEngine.ini

@@ -1,4 +1,11 @@
+[DevOptions.Shaders]
+NeedsShaderStableKeys=true
 
+[ShaderPipelineCache]
+r.ShaderPipelineCache.Enabled=1
+r.ShaderPipelineCache.PrecompileOnLoad=1
+r.ShaderPipelineCache.LogLevel=1
+r.ShaderPipelineCache.SaveUserCache=true
 
 [Audio]
 UseAudioMixer=True

Config/DefaultGame.ini

@@ -8,4 +8,8 @@ bAddPacks=True
 InsertPack=(PackSource="StarterContent.upack",PackName="StarterContent")
 
 [SectionsToSave]
-+Section=StartupActions
++Section=StartupActions
+
+[/Script/UnrealEd.ProjectPackagingSettings]
+bShareMaterialShaderCode=True
+bSharedMaterialNativeLibraries=True