Add automatic field scroll preference (applies whenever a card enters / leaves the field to that card's controller)

Automatic field scroll (applies whenever a card enters / leaves the field to that card's controller):
- Automatically scroll towards controller
- Don't automatically scroll (Default?)
- Automatically scroll away from controller

In the example below, the scroll bar currently doesn't move when creatures are played, which hides them. When player A attacked me, the attacking creature was off-screen. In the second image, scrolling away from player A revealed the attacking monster. I would like to have the ability to automatically scroll away from a card's controller when a card enters / leaves the game so I don't forget about creatures. Automatically scrolling towards a player can also be useful if I really need to pay attention to their open mana.

Hidden creature:

Revealed creature:

I want to emphasize that automatic scrolling should only be applied whenever a card enters / leaves the field **to that card's controller**. It should not apply to all players. This allows you to focus on a different aspect of a certain opponent's field until they play another card.

Also, I used the (towards / away from) controller phrasing since players can have different orientations on the screen.

This will be especially useful for multiplayer games!