Support [N x N] and [N x M] sized tiles

[tommai78101]

N = 1 or more.
M = 1 or more. Does not equal to N.

The game and the editor both needs to support tiles that are larger than 1x1 tiles.

Or, the editor needs to support large tiles, while the game translate large tiles into 1x1 tiles that are grouped together with the same functionality.

Either way, this will help immensely with placing down building tiles and large structural tiles that 1x1 tiles can't fit data in.