refactor: mod client, move builder to ::client::builder

src/client/mod.rs

@@ -1,4 +1,7 @@
-use crate::{builder::ClientBuilder, error::*, response::Response, status::*};
+pub mod builder;
+
+use crate::{error::*, response::Response, status::*};
+use builder::ClientBuilder;
 
 use std::net::ToSocketAddrs;
 use std::sync::Arc;

src/lib.rs

@@ -1,4 +1,3 @@
-pub mod builder;
 pub mod certs;
 pub mod client;
 pub mod error;