Added support for setting template_data on create/update template

[jemeric]

Description

Add template_data to create_template, create_new_locale, create_new_version and update_template_version

Motivation and Context

Parity with the current Sendwithus API

How Has This Been Tested?

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.