ci: re-enable formality comments and labels

[BKPepe]

This reverts commit 1f2d665 and reintroduce PR: #28054

Hopefully, token issue was solved and if not, let's see. 🤞

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[GeorgeSapkin]

How was the token issues solved?

[BKPepe]

Unfortunately, as you can see, that token hasn't been resolved at all. However, I did send an email about it and CC'ed you on it. I’d like to replace this with a webhook, along with some other cool features I have ready. It's handled via a GitHub app, it doesn't use a runner, and it looks good, but for now, I've requested it to be installed for the OpenWrt packages repository. It's currently awaiting approval.

It can be seen here, there are already three checks and comments are also working:
https://github.com/BKPepe/packages/pull/3/checks?check_run_id=83899820416

It should save some resources from GitHub runners.

[BKPepe]

Okay, closing. This is done by https://github.com/openwrt/openwrt-bot-worker
Comments are also working as it can be seen here: #29852