MiSTer Companion v7.5.6

This release mainly targets Windows and Linux, where MiSTer Companion uses cdrdao as its disc burning backend. macOS uses a different backend and is therefore largely unaffected by these changes.

• Fixed mixed-mode CD burning with cdrdao, preventing CD audio tracks from turning into static.
• Improved CUE/BIN handling for shared-BIN layouts that could previously fail during CUE to TOC conversion.
• Added automatic mixed-mode audio byte-order handling while keeping data tracks untouched.
• Improved compatibility with PC Engine CD and other mixed-mode disc images.