feat(client): Apply configuration sequentially

[0x676e67]

This pull request focuses on refactoring the ClientBuilder and Config structures in the src/client/http.rs file to improve the handling of TLS configurations and headers. The most important changes include the introduction of a TlsConfig structure, removal of the HttpContext structure, and updates to various methods to reflect these changes.

Refactoring and improvements:

• Replaced HttpContext with TlsConfig in Config struct and ClientBuilder methods. [1] [2] [3]
• Added headers and headers_order fields to Config struct and updated related methods to use these fields. [1] [2] [3]
• Updated ClientBuilder methods to use the new TlsConfig structure for TLS-related configurations. [1] [2] [3]
• Simplified the impersonate method to update the Config struct directly with values from the HttpContextProvider.
• Removed unnecessary imports and updated existing imports to reflect the refactoring changes. [1] [2]