Description of problem:
pipewire-devel does not provide the file /usr/include/spa/pod-parser.h, making it impossible to build packages against it.

Version-Release number of selected component (if applicable):
0.1.6-1

How reproducible:
Always.

Steps to Reproduce:
1. try to build e.g. mutter from srpm on a fully updated system

Actual results:
the build fails with the following error:
In file included from /usr/include/spa/node.h:34:0,
                 from /usr/include/pipewire/port.h:31,
                 from /usr/include/pipewire/core.h:45,
                 from /usr/include/pipewire/client.h:47,
                 from /usr/include/pipewire/pipewire.h:29,
                 from backends/meta-screen-cast.c:27:
/usr/include/spa/props.h:29:10: fatal error: spa/pod-parser.h: No such file or directory
 #include <spa/pod-parser.h>
          ^~~~~~~~~~~~~~~~~~
compilation terminated.

Expected results:
It should compile

Additional info:
easy workaround: just get the file from github (https://raw.githubusercontent.com/PipeWire/pipewire/0.1.6/spa/include/spa/pod-parser.h)