v0.5.4

New

• support metrics config 617fcb4
• add download config button for wireguard 88d6246
• add RHEL system to xui.sh & install.sh
• mark 2053 port as unsecured 2cd9f31

Other

• refactor: use math.MaxUint16 when checking port
• refactor: install.sh code format
• update dependencies