pipewire-0.2.2-bp151.1.2

- Update to version 0.2.2:
  + Add apiversion to pkgconfig as well.
- Add apiver define and set it to 0.2.
- Bump libpipewire define to libpipewire-0_2-1 and libspa define to
  libspa-lib1 following upstream changes.

- Update to version 0.2.1:
  + stream: update to latest API.
  + hook: add private data for future expansion.

- Update to version 0.2.0
  * No changelog provided by upstream. To see the changes in this
    version, please browse the commit logs at
    https://github.com/PipeWire/pipewire/commits/0.2.0 .

- Initial package, version 0.1.9.