[github] enable repository discussions

[seanpm2001]

Discussions are a useful GitHub feature, and it would be nice for this project to use them. It is a single checkbox to enable, and it would greatly strengthen this projects community.

For more info, see The GitHub Docs

Certainly could be enabled, an appropriate place to share rules with other users.

[Gitoffthelawn]

Discussions are now open!!!

https://github.com/einaregilsson/Redirector/discussions