Swiss v0.6r1667

@Extrems committed:

• Use file name when it is a subset of the title.
• Support SD2SP2 2.0.
• Adjust for libogc2 changes.
• Clarify messaging regarding 16 MHz fallback.

d1a13cb6c5c461adb8922d9dd9547d69a0c18a3f1af49fe518e23ec9146f1ee1  NKit_v1.4.20240604.zip
60f73ce6329f41d3d4e5d1b8b021070ff6887a0c2b0f3094a97d1d4b3c8e372d  swiss_r1667.7z
05c5f6481fe76005647cf1872b77d32ecdbecae4d7772e40d766895d98fe0147  swiss_r1667.tar.xz