audio/py-pyradio: Update to 0.9.3.11.15

• Install icon in share/icons/hicolor/512x512/apps otherwise the program does not find it
• Fix pyproject.toml, because the build framework does not recognise its new format (see https://packaging.python.org/en/latest/guides/writing-pyproject-toml/#license-and-license-files )
• Pet portfmt

Release changes: https://github.com/coderholic/pyradio/releases/tag/0.9.3.11.15
Reported by: Spiros Georgaras <notifications@github.com>