doc: make all manpages with Doxygen

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.

doc/dox/programs/pipewire-pulse.conf.5.md

@@ -0,0 +1,56 @@
+\page page_man_pipewire-pulse_conf_5 pipewire-pulse.conf
+
+The PipeWire Pulseaudio server configuration file
+
+# SYNOPSIS
+
+*$XDG_CONFIG_HOME/pipewire/pipewire-pulse.conf*
+
+*$(PIPEWIRE_CONFIG_DIR)/pipewire-pulse.conf*
+
+*$(PIPEWIRE_CONFDATADIR)/pipewire-pulse.conf*
+
+*$(PIPEWIRE_CONFDATADIR)/pipewire-pulse.conf.d/*
+
+*$(PIPEWIRE_CONFIG_DIR)/pipewire-pulse.conf.d/*
+
+*$XDG_CONFIG_HOME/pipewire/pipewire-pulse.conf.d/*
+
+# DESCRIPTION
+
+Configuration for PipeWire's PulseAudio-compatible daemon.
+
+The configuration file format is the same as for `pipewire.conf(5)`.
+There are additional sections for configuring `pipewire-pulse(1)`
+settings.
+
+# CONFIGURATION FILE SECTIONS
+
+\par pulse.properties
+Dictionary. These properties configure the PipeWire Pulseaudio server
+properties.
+
+\par pulse.cmd
+Array of dictionaries. A set of commands to be executed on startup.
+
+\par pulse.rules
+Array of dictionaries. A set of match rules and actions to apply to
+clients.
+
+See \ref page_module_protocol_pulse "libpipewire-module-protocol-pulse(7)"
+for the detailed description.
+
+In addition, the general PipeWire daemon configuration sections apply,
+see \ref page_man_pipewire_conf_5 "pipewire.conf(5)".
+
+# AUTHORS
+
+The PipeWire Developers <$(PACKAGE_BUGREPORT)>;
+PipeWire is available from <$(PACKAGE_URL)>
+
+# SEE ALSO
+
+\ref page_module_protocol_pulse "libpipewire-module-protocol-pulse(7)",
+\ref page_man_pipewire_conf_5 "pipewire.conf(5)",
+\ref page_man_pipewire-pulse_1 "pipewire-pulse(1)",
+\ref page_man_pipewire-pulse-modules_7 "pipewire-pulse-modules(7)"