Add UsePascalCase setting for Enum members

[makhin]

For now not possible to Generate enum members as is in the Database, but it is useful setting because not always enum should be translated to Pascal case.
Use Setting.PascalCase for this behavior is also not good, because it should be independent settings.

[sjh37]

Thank you Alexandr. Well done. You are the first one to make use of BuiltTT to generate the TT file for you after using the Generator project. :-) Most just modify the .ttinclude file and leave it to me to add the code into the generator project.
I will give you a free licence and email it to amakhin@gmail.com as a thank you!

[makhin]

Thanks for the license I am very grateful to you, always try to understand the product developer's original idea and follow his code standards. I think about one more feature to add to your perfect product, mb I will create one more PR later.

[sjh37]

Now released in v3.5.0