* Expand ansible-doc to tests/filters and fix existing issues
enable filter/test docs if in single file or companion yaml
add docs for several filters/tests plugins
allow .yml companion for docs for other plugins, must be colocated
verify plugins are valid (not modules, cannot)
fix 'per collection' filtering
limit old style deprecation (_ prefix) to builtin/legacy
start move to pathlib for saner path handling
moved some funcitons, kept backwards compat shims with deprecation notice
Co-authored-by: Abhijeet Kasurde <akasurde@redhat.com>
Co-authored-by: Felix Fontein <felix@fontein.de>
Co-authored-by: Sandra McCann <samccann@redhat.com>
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