Feat/feed specific topics

[hailelagi]

addresses: #384

[jerodsanto]

I think the existing FeedController is a better place for this functionality, since there is nothing new/unique about a topic feed. It's just another feed with different/specific content.

[hailelagi]

Yeah, I agree that makes more sense. My initial thinking was to decouple the functionality so the controller could be smaller and avoid namespace issues but taking another look now this leads to a lot more unnecessary boilerplate.

[hailelagi]

Hi @jerodsanto I kind of dropped off on this last year sorry about that, but I really want to pick it back, although it's been quite awhile! If this is something useful I'll try to dive back in! cheers

[jerodsanto]

Yeah man, let's pick it back up!

[gerhard]

There are a few failing tests: https://app.circleci.com/pipelines/github/thechangelog/changelog.com/812/workflows/db6d709a-3d33-49e4-9e22-b027d7fe1712/jobs/5532?invite=true#step-105-1171

When they get fixed, what needs to happen before this can get merged @jerodsanto?

[hailelagi]

I have a few changes on my local host, I think I can close this out this weekend, but happy to take any pointers on direction

[Nezteb]

Alright @hailelagi @gerhard I've got a PR ready for reviews: #430 (I branched off of this PR branch)