Add non-generic methods to TestGenerics

In order to select the correct generic type, model.GetGenericMethod is
changed to use Name (which includes generic parameters) instead of
BaseName. The tests for GenericMethodDefinitionInGenericClass* are also
changed to reflect the fact that the chosen methods are fully concrete.

TestGenerics now passes in its entirety.

Il2CppInspector.Common/Reflection/Il2CppModel.cs

@@ -59,7 +59,7 @@ namespace Il2CppInspector.Reflection
 
         // Get a concrete instantiation of a generic method from its fully qualified name and type arguments
         public MethodBase GetGenericMethod(string fullName, params TypeInfo[] typeArguments) =>
-            GenericMethods.Values.First(m => fullName == m.DeclaringType.Namespace + "." + m.DeclaringType.BaseName + "." + m.Name
+            GenericMethods.Values.First(m => fullName == m.DeclaringType.Namespace + "." + m.DeclaringType.Name + "." + m.Name
             && m.GetGenericArguments().SequenceEqual(typeArguments));
 
         // Create type model