refactor(vhost): add ipv6 support for host parsing

refactor: move plugin init to server. Add plugin as dependency to the…

… proxy

chore(plugin): check if plugins (if any) are loaded

Update README.md

fix(proxy): handle client disconnect from round tripper using proxy e…

…rror

chore(proxy): restructure proxy headers logic

Update README.md

Update README.md

feat(logger): allow both console and log to file

feat(cert_manager): use noop to control if email should be sent