chore: Improve Debug implementation

[0x676e67]

This pull request includes several changes to improve the debugging capabilities and simplify the codebase in the src/client/http.rs and src/tls modules. The most important changes include adding new fields to the Config struct, implementing the Debug trait for several structs, and removing the impl_debug macro usage.

Improvements to debugging capabilities:

• src/client/http.rs: Added the Debug trait to the ClientInner and Proxies structs. [1] [2]
• src/tls/cert/store.rs: Implemented the Debug trait for the RootCertStoreProvider enum.

Codebase simplification:

• src/client/http.rs: Added new fields to the Config struct, such as connect_timeout, connection_verbose, pool_idle_timeout, and others.
• src/tls/conf.rs: Removed the impl_debug macro usage for the TlsConfig struct and added the Debug trait to it. [1] [2] [3]