feat: Add tvOS Support to Google Analytics Repo

[nickolas-dimitrakas]

Summary

• Added tvOS support to the GA4 mParticle integration by declaring a tvOS 15.0 deployment target, sharing the existing source set, and wiring platform-appropriate dependencies

Testing Plan

• Was this tested locally? If not, explain why.
• Verified locally via E2E testing to confirm data flows correctly.

Reference Issue (For mParticle employees only. Ignore if you are an outside contributor)

• Closes https://rokt.atlassian.net/browse/SDKE-33

[denischilik]

LGTM