* Widescreen Hotkey
Added the ability to toggle Widescreen Hack and set the Aspect Ratio via a hotkey.
This is in response to Discussion #1912 (https://github.com/stenzek/duckstation/discussions/1912)
* Widescreen Hotkey Uses Settings
The Widescreen Hotkey now looks at the user's global or game settings when toggling. This means:
When disabling the widescreen hack it uses a non-wide ratio as set by the user if available or auto if unavailable.
When enabling the widescreen hack it uses a wide ratio as set by the user if available or 16:9 if unavailable.
* Avoids loading the entire settings now.
Specifically loads the aspect ratio setting.
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