Add configurable TLS version and cipher suite support

[wissemnord]

Summary

This PR adds configurable TLS version and cipher suite support, allowing users to specify custom TLS settings for security
compliance.

Why this is needed

Many enterprise environments require specific TLS versions (e.g., TLS 1.3 only) and custom cipher suites to meet compliance requirements or security policies.
Currently, the SDK uses default curl TLS settings, which may not meet these stricter security standards.

Changes

• Added setTlsVersion() and getTlsVersion() methods to Configuration class
• Added setTlsCipherList() and getTlsCipherList() methods to Configuration class
• Enhanced ApiClient to automatically apply TLS settings using appropriate curl options (CURLOPT_TLS13_CIPHERS for TLS 1.3, CURLOPT_SSL_CIPHER_LIST for older versions)
• Maintains full backward compatibility with existing SSL configuration

This enables users to enforce specific TLS security requirements while maintaining the existing API structure.