doc: add 'Configuration' page

Add pointer for readers to Wiki and WirePlumber docs, where the
documentation actually is at, so the configuration docs can found
starting from docs.pipewire.org

doc/dox/config/index.md

@@ -0,0 +1,42 @@
+\page page_config Configuration
+
+One of the design goals of PipeWire is to be able to closely control
+and configure all aspects of the processing graph.
+
+A fully configured PipeWire setup runs various pieces, each with their
+configuration options and files:
+
+- **pipewire**: The PipeWire main daemon that runs and coordinates the processing.
+
+- **pipewire-pulse**: The PipeWire PulseAudio replacement server. It also configures
+  the properties of the PulseAudio clients connecting to it.
+
+- **wireplumber**: Most configuration of devices is performed by the session manager.
+  It typically loads ALSA and other devices and configures the profiles, port volumes and more.
+  The session manager also configures new clients and links them to the targets, as configured
+  in the session manager policy.
+
+- **PipeWire clients**: Each native PipeWire client also loads a configuration file.
+  Emulated JACK client also have separate configuration.
+
+# Configuration Settings
+
+Configuration of daemons:
+
+- [PipeWire daemon configuration](https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Config-PipeWire)
+- [WirePlumber daemon configuration](https://pipewire.pages.freedesktop.org/wireplumber/)
+- [PipeWire PulseAudio daemon configuration](https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Config-PulseAudio)
+
+Configuration of devices:
+
+- [WirePlumber configuration](https://pipewire.pages.freedesktop.org/wireplumber/daemon/configuration.html)
+- [Device runtime settings](https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Config-Devices)
+
+Configuration for client applications, either connecting via the
+native PipeWire interface, or the emulated ALSA, JACK, or PulseAudio
+interfaces:
+
+- [PipeWire native clients](https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Config-client)
+- [PipeWire ALSA clients](https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Config-ALSA)
+- [PipeWire JACK clients](https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Config-JACK)
+- [PipeWire PulseAudio clients](https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Config-PulseAudio)

doc/dox/index.dox

@@ -11,6 +11,16 @@ PipeWire is low-level multimedia framework that provides:
 See \ref page_overview for an overview of PipeWire and \ref page_design
 for the design principles guiding PipeWire.
 
+# Documentation
+
+- \ref page_config
+- \ref page_programs
+- \ref page_modules
+- \ref page_pulse_modules
+
+See our [Wiki](https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/home) for
+more information on how to configure and use PipeWire.
+
 # Components
 
 PipeWire ships with the following components:
@@ -27,11 +37,6 @@ PipeWire ships with the following components:
 
 See \ref page_api.
 
-# More Documentation
-
-See our [Wiki](https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/home) for
-More information on how to configure and use PipeWire.
-
 # Resources
 
 - [PipeWire and AGL](https://wiki.automotivelinux.org/_media/pipewire_agl_20181206.pdf)

doc/meson.build

@@ -33,6 +33,7 @@ extra_docs = [
   'dox/modules.dox',
   'dox/pulse-modules.dox',
   'dox/programs/index.md',
+  'dox/config/index.md',
   'dox/internals/index.dox',
   'dox/internals/design.dox',
   'dox/internals/access.dox',

doc/tree.dox

@@ -123,6 +123,7 @@ Support interfaces provided by host
 \}
 
 \page page_overview
+\page page_config
 \page page_programs
 \page page_modules
 \page page_pulse_modules