docs: update README.md

[garotm]

Note

Revamps README to cover v2.0 breaking changes, new exception-driven usage, stricter token validation, and Python 3.9+ support.

• Documentation (README.md):
  • v2.0 Highlights:
    • Adds breaking changes section and migration guide.
    • Switches guidance to exception-based error handling with specific exceptions.
    • Emphasizes strict token format validation and structured logging.
  • Usage:
    • Updates example to import and handle TokenNotFoundError, InvalidTokenError, PlatformNotSupportedError, CredentialHelperError and print masked token.
  • Features:
    • Consolidates and expands features: token validation, structured logging, robust credential parsing/sanitization, detailed exception hierarchy.
  • Prerequisites:
    • Raises Python requirement from 3.6+ to 3.9+.
  • Troubleshooting:
    • Adds steps referencing specific exceptions and invalid token format guidance.
  • License:
    • Links LICENSE file explicitly.

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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