feat(wireguard): bringing wireguard to UI

[Tbaile]

This pull request introduces significant improvements to WireGuard VPN management and integration in the NethSecurity platform. The changes include a major redesign of the WireGuard API, enhanced device handling for WireGuard interfaces, new dependency and post-commit script management, and improved package installation for WireGuard tools. The documentation has also been thoroughly updated to reflect the new API endpoints and usage.

WireGuard API Redesign and Documentation Updates

• The WireGuard API in packages/ns-api/README.md has been completely reworked: new endpoints for managing servers, peers, and client tunnels have been introduced, with clear separation between server and client tunnel management. The documentation now provides detailed examples and parameter explanations for each endpoint, replacing the previous, less structured API. [1] [2]

Device Handling Improvements

• Device listing logic in packages/ns-api/files/ns.devices now properly filters WireGuard interfaces, ensuring devices pending deletion are excluded and that WireGuard devices are correctly associated with their interfaces. VPN zone detection now includes WireGuard interfaces. [1] [2] [3] [4]

Build and Dependency Management

• The wireguard-tools package is now a dependency of ns-api, ensuring required tools are available for WireGuard management.
• The build system for WireGuard tools now installs the wg-json binary, facilitating JSON-based WireGuard status queries.

Post-commit Script Enhancements

• A new post-commit script restart-wireguard.py has been added to reload WireGuard interfaces when configuration changes are detected, improving reliability and automation of VPN updates. [1] [2]

Luci Configuration Adjustments

• Luci package configuration has been updated to set WireGuard-related packages to modular (m) instead of always enabled, providing more flexible package selection and reducing unnecessary installations.

Closes #1352