AI Face beta2

[Han-msft]

Description

• Added support for the Large Face List and Large Person Group
• Added support for latest Detect Liveness Session API
• Change the default service API version to v1.2-preview.1.

All SDK Contribution checklist:

• The pull request does not introduce [breaking changes]
• CHANGELOG is updated for new features, bug fixes or other significant changes.
• I have read the contribution guidelines.

General Guidelines and Best Practices

• Title of the pull request is clear and informative.
• There are a small number of commits, each of which have an informative message. This means that previously merged commits do not appear in the history of the PR. For more information on cleaning up the commits in your PR, see this page.

Testing Guidelines

• Pull request includes test coverage for the included changes.

[azure-sdk]

API change check

APIView has identified API level changes in this PR and created following API reviews.

com.azure:azure-ai-vision-face

[weidongxu-microsoft]

We likely need more tests on administration clients, after API review pass (they could be in follow-up PRs).

[Han-msft]

We likely need more tests on administration clients, after API review pass (they could be in follow-up PRs).

Thanks for Weidong's suggestion, manually tested with sample. Will add test in the future.