Fixed the generated code when a template has a base type.

Signed-off-by: Dimitar Dobrev <dpldobrev@protonmail.com>

src/Generator/Generators/CSharp/CSharpTextTemplate.cs

@@ -655,7 +655,8 @@ namespace CppSharp.Generators.CSharp
         {
             Write("public ");
 
-            if (@class != null && @class.NeedsBase && !@class.BaseClass.IsInterface && !@class.IsDependent)
+            if (@class != null && @class.NeedsBase && !@class.BaseClass.IsInterface &&
+                !(@class is ClassTemplateSpecialization))
                 Write("new ");
 
             var templateSpecialization = @class as ClassTemplateSpecialization;

tests/CSharp/CSharpTemplates.h

@@ -9,7 +9,7 @@ class DLL_API T2
 };
 
 template <typename T>
-class DLL_API IndependentFields
+class DLL_API IndependentFields : public T1
 {
 private:
     int field;