[SDK-2491][WIP] Create new test app and GHA for Mobileboost tests

[nsingh-branch]

Reference

SDK-2491 -- Create new Android test apps for use with MobileBoost/GPT Driver

Description

Created a new delayed init test app for use with mobile boost.

Testing Instructions

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.