Platforms

- Fixed patch misplaced 'return true' (it was terminating a loop, when it should have been handling rails)
- Fixed not being able to apply soul torches to frames anymore
- Fixed placement guide and actual placement not matching when an incline is placed on a frame
- Fixed automatic world covering not applying
- Moved covering from the blockstate to the tile entity (this will result in the loss of existing coverings eg.sand dust; but most was auto generated, and for those manually applied no material was used)
- Disallow applying coverings that don't render on that platform type
- Platform models now share an instance (they're already the same so the additional copies where just wasting ram, and startup creation time)
- Sneak+Click with shovel now removes all covering at once (otherwise its only one layer at at time)