SVTPlay and TV4Play unshackle support

[Gomzumi]

Hello.

Any chance you will port those 2 services to unshackle?

https://github.com/stabbedbybrick/freevine/tree/main/services/svtplay

https://github.com/stabbedbybrick/freevine/tree/main/services/tv4play

[stabbedbybrick]

I don't have any immediate plans for it, but it's definitely possible I'll add them in the future.

I'll leave this issue open as a reminder.