✨ Support for Keyboard.IsScrollLocked

[softwareantics]

Description

It would be really nice to have support for checking the lock state of the scroll lock key on a standard keyboard.

The Why

This feature is necessary because it is a lockable key, the end-user might want to check it's state before performing an action.

The How

This feature would be super easy to implement, if the OpenTK library supported it. All we'd need to do is change the KeyEventArgs class to include a property for ScrollLock and then add a property to the Keyboard class called IsScrollLocked. It's fairly straight forward.

Requirements

The developers of OpenTK will need to provide support for this on their end, an issue will be filed when we get around to implementing this feature.