Add Unifi Applicaton

[RyanMH47]

What problem will this feature address?

This requires a few special configs and having a template would make this much easier

Here's the solution: https://fleet.linuxserver.io/image?name=linuxserver/unifi-network-application

Describe the solution you'd like

Please create the "stack" with persistent storage etc; that can automatically update as well
https://fleet.linuxserver.io/image?name=linuxserver/unifi-network-application

Describe alternatives you've considered

I've worked to build this myself - but it would be much easier with a template.

Additional context

No response

Will you send a PR to implement it?

No