Wireguard-go: flags refactoring proposal

[Francesco Cheinasso]

Hi, I'm Francesco Cheinasso, an open-source developer from the project
liqo (https://github.com/liqotech/liqo).

First of all, thanks for your excellent work and for sharing it with
the open-source community.

In liqo, we are integrating wireguard-go as an alternative for users
with old kernel, but we are facing a problem, it's not possible to set
the MTU at the moment in wireguard-go. I'm taking a look at the code,
to add the possibility to specify the MTU, a flag refactoring should
be necessary.

It would bother you if we take care of a flag refactoring inside wireguard-go?

Regards
Francesco Cheinasso