WireGuard Vanity Key Generator: Streamlined Key Generation

This command-line tool, `wireguard-vanity-keygen`, generates WireGuard public keys matching a specified prefix. It offers multi-core processing, case-sensitive/insensitive search, regex support, and the ability to search multiple prefixes concurrently. The tool displays estimated generation time and probabilities, making it easier to generate memorable and manageable WireGuard keys. A significant improvement over existing solutions, offering a more streamlined and efficient key generation experience.