[ENHANCEMENTS] Add Tailscale to Global Area Network Options

[PhoenixSheppy]

Is your feature request related to a problem? Please describe.
No, it is a direct feature request. I don't use Zerotier, I use Tailscale as it supports SSO on the free tier.

Describe the solution you'd like
The ability to use Tailscale as a GAN option.

Describe alternatives you've considered
Wireguard is another option, or IPSec would be nice too. (raw configuration vs. using a specific service)

Additional context
https://tailscale.com/

[JD-The-65th]

I think tailscale is built on wireguard, so I think wireguard and then tailscale would be nice, but take this with a pinch of salt

[tobychui]

Unfortunately I don't use Tailscale. I will keep this enhancement request open and see anyone want to pick this up and create a PR to this project.

[johnmmcgee]

I think tailscale is built on wireguard, so I think wireguard and then tailscale would be nice, but take this with a pinch of salt

I agree with a WG plugin. That would be awesome.

[ElijahHW]

Can confirm this would make this project additionally sexy if it had support for Tailscale! More and more self-hosters are turning to Tailscale due to its ease of use and generous free tier. Would highly appreciate this as a GAN option ✨