This commit introduces the Bark notification integration, allowing users to configure Bark webhooks in repositories. It includes form models, templates, routing changes, and test cases to handle Bark webhook functionality.
Fixes https://github.com/go-gitea/gitea/issues/30005. Regression from
https://github.com/go-gitea/gitea/pull/29945.
There was only once instance of `tw-content-center` before that PR, so I
just ran below command and reverted that one instance.
```sh
perl -p -i -e 's#tw-content-center#tw-items-center#g' web_src/js/**/* templates/**/* models/**/* tests/**/*
```
I noticed that the code of several new webhook pages is highly
repetitive, so I pulled out the common parts to a new template, unified
reference, unified maintenance
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Co-authored-by: KN4CK3R <admin@oldschoolhack.me>