Add Plugin Support for PPSSPP Emulator

📋 Summary

Add official plugin support for PPSSPP, the most popular PSP emulator, to streamline integration and gameplay launching within LaunchBox.

🎯 Feature Overview

• Automatically download and configure PPSSPP inside LaunchBox.

• Recognize .iso, .cso, and .pbp files and assign PPSSPP as the default emulator.

• Offer built-in access to graphics, control, and system settings.

• Support per-game configuration profiles and save state management.