API Changed PRs

[yiliu30]

Labels for marking the API-changed PR (feel free to add more labels)

• api/new: Introduces a new user-facing command
• api/change: Modifies an existing API

The PR list (Filtered result of is:pr label:api/new, api/change):
https://github.com/intel/auto-round/pulls?q=is%3Apr+label%3Aapi%2Fnew%2C+api%2Fchange+

[yiliu30]

• New API for logger Refine logger and add envs #817

AR_LOG_LEVEL=DEBUG python ...