skip 2 frames

Finally was able to compile luatrauma
And stack trace seems to be 1 frame longer than in harmony patch
also you need System.Diagnostics (kek)

Barotrauma/BarotraumaShared/SharedSource/LuaCs/Plugins/CsPackageManager.cs

@@ -5,6 +5,7 @@
 using System.IO;
 using System.Linq;
 using System.Reflection;
+using System.Diagnostics;
 using System.Runtime.CompilerServices;
 using System.Text;
 using System.Threading;
@@ -832,7 +833,7 @@ private void TryRun(Action action, string messageMethodName, string messageTypeN
         {
             StackTrace st = new StackTrace(e);
             String s = String.Join('\n',
-               st.GetFrames().SkipLast(1)
+               st.GetFrames().SkipLast(2)
                .Select(f => $"  at {f.GetMethod().DeclaringType}.{f.GetMethod().Name}()")
             );