* feat: configurable VPN toggle for Wireguard
- Added VPN service for wg-quick
- Added VPN toggle to utilities quick toggles
- Configuration in UtilitiesConfig (enabled, connectionName)
* fix: monitoring and toasts
- Using nmcli monitor for state detection instead of polling
- Added VPN toast notifications
* fix: use polkit
* feat: multi-provider VPN support
- Added support for netbird and tailscale providers
- Universal interface detection using ip link show
- Provider-specific privilege handling (pkexec only for wireguard)
- Updated README with VPN configuration examples
* feat: less hardcoded, configurable providers
* removed comments
* code style changes
* reorganize signal handler
