UltaVPN Link Decoder and Config Generator

DESCRIPTION
This tool decodes UltaVPN links (vpn://) and can fetch WireGuard configurations from the API.

USAGE
python vpn2conf.py <vpn_link> [OPTIONS]

OPTIONS
  -gc, --get-conf    Fetch WireGuard configuration from API
  -o, --output FILE  Save WireGuard configuration to FILE
  -h, --help         Show help message

EXAMPLES
1. Decode VPN link only:
   python vpn2conf.py "vpn://abcd1234..."

2. Decode VPN link and fetch configuration:
   python vpn2conf.py "vpn://abcd1234..." -gc

3. Decode VPN link, fetch and save configuration:
   python vpn2conf.py "vpn://abcd1234..." -gc -o wireguard.conf