Update Backtrace Unreal Engine Android Setup

[melekr]

Description

Update Backtrace Unreal Engine Android Setup, Initialize the Backtrace Client.

Motivation and Context

Updated Integration.

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)
• [x ] Documentation fix (typos, incorrect content, missing content, etc.)