How to avoid type name start-case?

[sospartan]

Issue Description:

All definition names are automatically converted to start case. As the swagger doc said:

All field names in the specification are case sensitive

Expected Behavior: I would like an option to control whether the tool converts definition names to start case or not.

Additional Information:

Version: 13.0.3 Steps to Reproduce: I found this issue when generating codes from libpod's api, in which have two definitions called networkCreate and NetworkCreate. I believe adding this configurability would enhance the usability and flexibility of the tool. Thank you for considering this enhancement!