Added Core.dll to Beat Saber default game files

IPA.Loader/Config/SelfConfig.cs

@@ -146,7 +146,7 @@ namespace IPA.Config
             {
             // LINE: ignore 5
 #if BeatSaber // provide these defaults only for Beat Saber builds
-                "Main.dll", "HMLib.dll", "HMUI.dll", "HMRendering.dll", "VRUI.dll"
+                "Main.dll", "Core.dll", "HMLib.dll", "HMUI.dll", "HMRendering.dll", "VRUI.dll"
 #else // otherwise specify Assembly-CSharp.dll
                 "Assembly-CSharp.dll"
 #endif