Implemented release of static data after transfer to the GPU

[rms7326]

Pull Request Template

Description

VSG is not obeying the Property.dataVariance setting, STATIC_DATA_UNREF_AFTER_TRANSFER. This pull request releases static data marked accordingly after transferring it to the GPU.

Fixes # (issue)

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

We tested this in our client code.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• New and existing unit tests pass locally with my changes