[WIP] Revamp the procedural crafting system.

[IntegratedQuantum]

• Add a button (WOOOOO! Progress!)
• Load a list of tool types from the assets
• Use the button to toggle between the available tool types
• Store the selected tool type in the inventory and sync it with the server (→done with the open command)
  • How should it be sent to the server? By numerical id with a palette, or directly as a string? (→string is the easiest
  • What should happen if the player clicks the button while something is in the crafting grid? Should it just reject it so we don't have to deal with the problems? (→solved by depositing, closing and reopening the inventory entirely)
• Support adding properties to each slot (source property of material, destination property of the tool and factor), which get added together to form the tool stats
• Support disabling slots(can't place items there), or making them mandatory(can't craft if empty).
• Support selecting which blocks it can mine.
• Add the base tools (axe, pickaxe, shovel)
• Support for tool textures to allow more control over the procedural generation (these should allow the artist to say which pixel corresponds to which slot using a color coding theme)
• cleanup

fixes #594
fixes #238
fixes #947
progress towards #89
progress towards #625