* add rustls support for actix-http and awc
* fix features conflict
* remove unnecessary duplication
* test server with rust-tls
* fix
* test rustls
* awc rustls test
* format
* tests
* fix dependencies
* fixes and add changes
* remove test-server and Cargo.toml dev-dependencies changes
* cargo fmt
* added Connector to actix-web::client namespace
* updated Connector, renaming service() to finish() and adding docs
* added doc for finish method on Connector