Pick relevant doc updates.
doc: fix DoxygenLayout.xml for doxygen 1.10
doc: add reference docs + index for config and env variables
doc: add some more coverage
doc: move config man pages under config/
doc: add sections to index, clarify discussion of properties
doc: disable dot graphs in API docs again
doc: some updates
doc: fix up example dependencies in meson
Update doc/ from master branch.
tutorial: fix s16 scale and add some docs
doc: add 'Configuration' page
doc: disable deprecated list
doc: fix some doxygen warnings
doc: put new pulse modules to right place
doc: filter some constructs that confuse doxygen
doc: Fix typo 'statis' -> 'static'
doc: include pipewire-pulse modules explanations also on man page
doc: add pw-v4l2.1 and spa-*.1
doc: add pw-reserve.1
doc: internals/access: update documentation vs current state
Use (fixed-up) Doxygen manpage output for all program & module manpages.
This also allows formatting the manual pages properly in the HTML docs.
The Markdown pages work properly only with Doxygen >= 1.9.7, older
versions put them to wrong place in the HTML docs.
