Log Message:
emulators: Add pcsxr.

PCSX-Reloaded is a forked version of the dead PCSX PlayStation emulator, with
a nicer interface and several improvements to stability and functionality.

PCSX-Reloaded uses the PSEMU plugin interface to provide most functionality;
without them, you will not be able to use it to play games. PCSX-Reloaded
provides a number of plugins to provide basic functionality out of the box.