PSXRecomp OpenBIOS integration

OpenBIOS is now a first-class, redistributable runtime backend.

Highlights:

Packages the PSXRecomp v4 BIOS runtime as PSXRecomp.exe.
Bundles PCSX-Redux OpenBIOS and its MIT notice.
Uses OpenBIOS when the player has not explicitly selected another BIOS.
Keeps a verified, user-provided SCPH1001.BIN as an optional runtime choice.
Lets launcher users clear a retail selection and return to OpenBIOS.
Prevents savestates created under one BIOS from loading under the other.
Adds Xbox-style controller support through SDL/XInput.
Adds configurable controller mapping via input.ini.
Includes the load-delay ownership fix validated in Tomba!, plus OpenBIOS smoke coverage in Ape Escape, Tomba! 2, and Mega Man X6.

This package does not include a retail PS1 BIOS, game disc image, generated game code, save data, or copyrighted Sony/game assets.