[Feat-macOS] Add MSync Setting

[flavioislima]

Msync is a feature similar with Esync and Fsync on Linux and aim to improve the performance when using the compatibility layer for CPU intensive games.

Some games might get up to 100% performance, but others might not have any performance improvement as well.

More information about the patch: https://github.com/marzent/wine-msync

Since it won't cause any harm when enabled, it will be enabled by default.

How to test

• Setting should appear only on macOS.
• When enabled, the settings should appear on the logs as true.

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Use the following Checklist if you have changed something on the Backend or Frontend:

• Tested the feature and it's working on a current and clean install.
• Tested the main App features and they are still working on a current and clean install. (Login, Install, Play, Uninstall, Move games, etc.)
• Created / Updated Tests (If necessary)
• Created / Updated documentation (If necessary)

[BrettCleary]

LGTM

[red-game-dev]

LGTM 🙌

[nyghtstalker]

I am seeing the option in Game Settings on Mac and it is not present on Windows. Toggling this option does reflect in the logs.