Added generator-specific options from Embeddinator.

Author: tritao

src/Generator/Options.cs

@@ -210,6 +210,19 @@ public bool DoAllModulesHaveLibraries() =>
         /// </summary>
         public HashSet<string> ExplicitlyPatchedVirtualFunctions { get; }
 
+        #endregion
+
+        #region Embeddinator options
+
+        // If true, will use unmanaged->managed thunks to call managed methods.
+        // In this mode the JIT will generate specialized wrappers for marshaling
+        // which will be faster but also lead to higher memory consumption.
+        public bool UseUnmanagedThunks;
+
+        // If true, will generate support files alongside generated binding code.
+        public bool GenerateSupportFiles = true;
+
+        #endregion
     }
 
     public class InvalidOptionException : Exception