Add activity-based sorting to the Discovery section

I've been waiting for this since I started using Fluxer to be honest. In any community-based platform you can have a ton of servers that were popular at one point and have thousands of members but no longer have any activity, and you have to sift through them when you're first starting to use the app. Meanwhile, smaller communities with fewer total members but significantly more activity get buried and struggle to grow naturally through the discovery tab, and have to promote themselves with their own efforts. I feel like the platform itself should reward being active rather than for having an already huge and established community that doesn't need promotion. Also helps new members avoid communities with deceptively large member counts but very little activity. Would love to see this implemented.