meson.build:
When the 'wrap_mode' option is set to 'nodownload' use a system version
of cpptoml. This does not require using git and having a network
connection during build, which is important for Linux packaging
infrastructure.

subprojects/cpptoml.wrap:
Pin revision to last release tag (v0.1.1).

lib/wptoml/*.cpp:
Remove 'include/' prefix from all cpptoml related includes, at is not
required.

Closes #17

    - due to usage of Reference-counted-data in lib/wptoml/array.cpp
      (requires >= 2.58, see https://developer.gnome.org/glib/stable/glib-Reference-counted-data.html)
    - and usage of G_GNUC_FALLTHROUGH in lib/wp/object-interest.c
      (requires 2.60, see https://developer.gnome.org/glib/stable/glib-Miscellaneous-Macros.html#G-GNUC-FALLTHROUGH:CAPS

)

Signed-off-by: Martin Koch, ESE GmbH <martin.koch@ese.de>

and in case it's missing, also #define some things to make compilation work,
since this is only available in a pipewire branch right now

Currently all it does is that it prints the properties
of all device nodes (Audio/Source & Audio/Sink), which
is useful for editing the configuration files

next version is going to be 0.2 from this branch

This allows loading of config and modules when deployed in
the target system without setting environment variables.