first pass hex arrow key movement

arrow keys to move
Try not to move off the grid it does not like it

first test but not using axial or cube coordinates will update to use in next few days just wanted a good demo

also shows using a selection of tiles to randomly fill the map (I know we want to do prebuilt but its good for testing) and each coloured hex also has a height all the blue tiles are the same height etc

also the selection should maintain a certain height over the grid