Enable GitHub Discussion.

[RokeJulianLockhart]

My rationale is available at 8go/matrix-commander#68 (comment).

However, summarily, issue-questions like #142 are better answered in a Q&A format. This is not least because an answer can be marked as accepted, but more importantly, because the issues section becomes used for development, as it should be.

Issues can retroactively be converted to (and from, I believe) discussions.

[RokeJulianLockhart]

Thanks. https://github.com/namazso/SecureUxTheme/discussions