https://github.com/go-gitea/gitea/pull/26051 I accidentally rebased
locally without my re-addition for these files, so they were missed in
the merge, but only for `main`.
Signed-off-by: jolheiser <john.olheiser@gmail.com>
This PR cleans up the docs in a way to make them simpler to ingest by
our [docs repo](https://gitea.com/gitea/gitea-docusaurus).
1. It includes all of the sed invocations our ingestion did, removing
the need to do it at build time.
2. It replaces the shortcode variable replacement method with
`@variable@` style, simply for easier sed invocations when required.
3. It removes unused files and moves the docs up a level as cleanup.
---------
Signed-off-by: jolheiser <john.olheiser@gmail.com>
