Mobly Release 1.12.3: Proper Repeat and Retry Reporting

Bumping min Python version requirement to 3.11.
Modernized the repo's packaging mechanism.
Removed legacy code and dependencies.

New

• Support am instrument options in snippet client.
• Support adb reverse in AdbProxy.
• Improved mechanism for tracking repeat and retry records in test report.

Breaking Changes

• [Deprecation] get_available_host_port is now deprecated and will be removed
  in the next major release. Please rely on the OS to allocate ports.

Fixes

• Eliminated redundant fastboot calls.

Full Changelog: 1.12.2...1.12.3