Feature/exit nodes - Windows/macOS support

[lixmal]

This PR enhances Netbird's routing capabilities on Windows and macOS, allowing us to use the default route on the client.

• Host routes are dynamically added/removed based on excluded IP addresses determined by hooks in custom dialers and listeners that are used for management traffic. This prevents management traffic from being routed through the VPN itself.
• Routes are removed only when their reference count reaches 0, ensuring routes persist while in use.
• Hooks into peer added/removed events manage routes based on peer IP addresses. This prevents routing loops and ensures dedicated connections to all peers.

Issue ticket number and link

Updates #289

Checklist

• Is it a bug fix
• Is a typo/documentation fix
• Is a feature enhancement
• It is a refactor
• Created tests that fail without the change (if possible)
• Extended the README / documentation, if necessary

[vysecurity]

Are exit nodes added? Netbird appears to have at least 2-3 times the speed.

[Neprena]

Are exit nodes added? Netbird appears to have at least 2-3 times the speed.

Not yet, but I think it's imminent.