feat: support hysteria2 for clash.meta (#11) * feat: support hysteria2 for clash.meta * Removed fast-open from Hysteria2 and added cwnd. Allow parsing url with password and port. * Revert cwnd. * Fix hysteria2.substr * Allow password in addition for Hysteria2. * Fixed wrong add when password is set in additions part; Added missing sni param. * Better insecure logic.