Add documentation for how you can and do diagnostics/profiling in
Forgejo, it covers the methods that Forgejo offer for this,
nuances of the methods and potential footguns. I don't expect the
average forgejo adminstrator to be able to profile their Forgejo
instance (hence the warning in the first paragraph about contacting the
Forgejo developers) but for those brave enough this documentation should
be a solid foundation to get started.
This is complementatory the Forgejo PR about improving the diagnostics:
- it is related to installation instructions
- mention SQLite in the guide
- reduce the complexity of the guide (I think we don't need to cover all the details here, there are better guides available)
- split the installation page into separate pages for Docker, binary install, and packages
- clarify the next step is the installation page via the web
- clarify the first user created has admin rights
- clarify how values in the config sheet are provided when using Docker installation
- explain database preparation can be skipped if using SQLite which is built-in
Fixes: https://codeberg.org/forgejo/docs/issues/117
