* initial implementation of rustls support
* Refactor create_self_signed_cert.sh script
* resolve lint errors
* Fix handling of Option in tls.rs
* Update cargo-hack check command and feature dependencies
* fix missing point
* Add conditional check to skip test if client or server is not enabled
* clean up things
* fix for windows CI
* try fixing Windows CI
* Update src/main.rs
* Update src/transport/websocket.rs
* add missing messages
* split the tls mod
Co-authored-by: Ning Sun <n@sunng.info>