Attribute Tile
A Tile used to display a single Attribute.
Supports Numeric or Dice Attributes.

Configuration:
- Attribute: a reference to the attribute to be displayed
- Label: the label displayed on this Element (can be empty, and will auto-complete to the Attribute's name by default)
- Size: controls the size of the Element
- Border: Toggle wether to use a Border for this Element
- Stretch: Toggle off to keep the element's ratio fixed. Toggle on to allow the element to stretch horizontally.
- Hide If Zero: If toggled on, the element will only be visible for the player when the attribute's value is not zero
- Icon: Optional icon
- FG Color: Foreground color: Color applied to the icon (no effect if no icon is used)