[SDK-2523] Added CPP level to branch.json

[nsingh-branch]

Reference

SDK-2523 -- Support CPP level in branch.json

Description

Added a check in the brach.json for the CPP Level

Testing Instructions

Add consumerProtectionAttributionLevel: "Full/Reduced/None" to branch.json and observe the CPP level being changed.

Risk Assessment [LOW]

• I, the PR creator, have tested — integration, unit, or otherwise — this code.

Reviewer Checklist (To be checked off by the reviewer only)

• JIRA Ticket is referenced in PR title.
• Correctness & Style
  • Conforms to AOSP Style Guides
  • Mission critical pieces are documented in code and out of code as needed.
• Unit Tests reviewed and test issue sufficiently.
• Functionality was reviewed in QA independently by another engineer on the team.

cc @BranchMetrics/saas-sdk-devs for visibility.