feat: add support for Attested-TLS

[pavelnikonorov]

Description:

Add optional support for the Attested-TLS (aTLS) protocol to enable secure interactions with TEE-based workloads in a Zero-Trust security model.

Associated Issues:

This meta issue requires the following individual issues to be addressed:

• feat(sdk): add Extensions Manager #64
• feat(transport): add support for extensible TLS verifiers #73
• feat: add extension implementing Attested-TLS client verification #72

Documentation Requirements:

Update CLI and SDK documentation with usage examples and configuration details for aTLS.

Testing Requirements:

Add integration tests for CLI commands and unit tests for SDK methods to confirm functionality and error handling.