Rescale Units and Movement Tiles so that they are at a 1:1 Ratio

[Tight-Head]

• Rescale the map size and unit scales so that they occupy the movement tiles 1:1 like on a chessboard. This should protect the player from any ambiguity within the location the units, and allows the combat resolver to be better implemented on a technical level. We should carry this design decision forwards when considering and creating new maps/levels.