Add CHD audio codec selection and 1G1R collection filter

[ClausValcaTD]

• Support configurable CD audio compression codec (FLAC vs Vorbis) for chdman createcd in core CLI and GUI Settings.
• Implement 1G1R (1 Game 1 ROM) collection filter in core, CLI (--1g1r, --priority), and GUI Tools panel.
• Add unit tests for CHD audio codec selection and 1G1R title parsing / regional priority sorting.

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PR created automatically by Jules for task 18223808192329363380 started by @ClausValcaTD

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