[PeriBluGaming]

Summary

This PR adds optional PlayStation Mouse (SCPH-1030) device selection to recomp-ui.

It enables compatible PlayStation recompilation projects to expose native mouse input through the launcher, while preserving existing controller options and keyboard/mouse behavior.

Changes

• Add an optional PlayStation Mouse device option to the launcher.
• Expose the option only when the game declares PlayStation Mouse support.
• Persist the selected device using p1_device = "mouse".
• Extend the launcher model and configuration interfaces.
• Add a dedicated source test for the mouse launcher integration.

Game configuration

Games can opt in using:

[controller]
supports_ps_mouse = true

Games without this capability remain unaffected.

Compatibility

This change is designed to preserve existing controller selection behavior, including the existing Keyboard + Mouse functionality used by other recompilation projects.

The native PlayStation Mouse protocol and runtime implementation are handled separately in a companion PSXRecomp change.

Testing

• Tested with RescueShotRecomp using native PlayStation Mouse emulation.
• Verified mouse device selection and configuration persistence.
• Added tests/launcher_mouse_source_test.c.
• Verified the changes build successfully in the integrated RescueShotRecomp environment.

Related work

Companion PSXRecomp PR: RetroPortingToolKit/psxrecomp#779

RescueShotRecomp: https://github.com/PeriBluGaming/RescueShotRecomp