* docs: extend profiling guide
More tools.
* chore: fix docs lint for `localhost` links
* docs: do not duplicate tracing docs
* refactor: clean up `lint_docs` and strip anchors from relative links
Configures the IOx tracing to compile out trace!() level events in the release
binary. This effectively gives contributors three levels of output:
* Important to the user (info & friends)
* Not important for regular running, but needed to debug
* Only useful to devs in a specific part of the system, never seen by user
Documents this behaviour (and general usage guidelines) for contributors.