More building options for crafting and creative mode.

[Doozerpindan]

Much as the title suggests, I would love more building options. There seem to be a bunch of blocks in the game that are not placeable by the player opr upgradeable. Certain support beams in buildings, the concrete ramps on the ends of bridges, and so on.

Also, being able to reshape terrain blocks after placing them would be nice. Would be nice if I could make hills look more organic rather than just super steep ramps (that damage my vehicle when going up them from a flat road).