Add tvOS compatibility

[joonmanji]

adding tvOS compatibility via podspec file

We need this library to be tvOS compatible for our tvOS application

Motivation and Context

tvOS compatibility

How Has This Been Tested?

Compiles

Screenshots (if appropriate):

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:

• I have signed the Adobe Open Source CLA.
• 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 read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.