@Ta180m workflow

The repository has several branches: * main is a duplicate of Gitea main. * dev is where development happens and is deployed for testing at https://git.exozy.me/. Commits to the dev branch are usually cherry-picked to the feature branches as needed. * feature-activitypub corresponds to PR #19133. * feature-manual-inbox-outbox contains an experimental inbox/outbox implementation. I will make a new branch with cleaner code for my upcoming inbox/outbox Gitea PR. All the other branches mostly contain some experimental code and aren't important. For testing, I run TAGS="bindata" make && sudo systemctl stop gitea && sudo cp gitea /usr/bin/gitea && sudo systemctl start gitea on the dev branch to deploy to https://git.exozy.me/ It's not the cleanest or fastest solution but it works.