PS3 ISO Import Support

📋 Summary

Add support in LaunchBox for importing PlayStation 3 ISO files now that RPCS3 can launch ISOs directly.

❗ Problem

RPCS3 supports PS3 .iso files, but currently:

• LaunchBox does not recognize .iso files when importing PS3 games

• Users must use other formats or workarounds to get PS3 games into their library

• This adds friction for PS3 collections stored as ISOs

💡 Proposal

Update the PS3 platform import logic to:

• Detect and import PS3 .iso files

• Associate them with RPCS3 by default where applicable

• Treat PS3 ISOs like other supported disc image formats during import and scanning

📦 Benefits

• Aligns LaunchBox with current RPCS3 capabilities

• Simplifies PS3 library imports for ISO based collections

• Reduces manual steps and workarounds

💡 Notes

• Should not affect existing folder based or decrypted PS3 imports

• Any necessary platform file extension lists should be updated accordingly