C++ Implementation GameInstance save, also some cleanup of unsued C++ classes

This literally took me days, as it turn out that the timing offset between C++ and BP Init of GameIstance caused it to not be added as a GlobalObject to SPUD correctly.

VIRTUOS_ExpansionPluginTests/Plugins/VRExpansionPlugin/Source/VRExpansionEditor/VRExpansionEditor.Build.cs

@@ -30,7 +30,7 @@ namespace UnrealBuildTool.Rules
 					"Engine",
 					"Core",
 					"CoreUObject",
-					"VRExpansionPlugin",
+					"VRExpansionPlugin"
 				}
 				);
 

VIRTUOS_ExpansionPluginTests/Plugins/VRExpansionPlugin/Source/VRExpansionPlugin/VRExpansionPlugin.Build.cs

@@ -69,7 +69,7 @@ public class VRExpansionPlugin : ModuleRules
                     "AnimGraphRuntime",
                     "XRBase",
                     "GameplayTags",
-                    "Mover"
+                    "Mover",
         });
 
         //if(Target.bUseChaos)
@@ -92,7 +92,7 @@ public class VRExpansionPlugin : ModuleRules
 				"ApplicationCore",
                 "RenderCore",
                // "ShaderCore",
-                "NetworkReplayStreaming"
+                "NetworkReplayStreaming",
                 //"Renderer",
                // "UtilityShaders"
             });