Dynamic TFC Structures

You need to remove your config/tfc_structures folder to let mod re-create default configs

Changes:

• Cracked bricks support
• Remove and create new tfc_structures_main datapack folder every time. That will let keep tfc_structures_main in line with config files.
• Use has_structure tags for structure activation instead of direct structure name. That will solve issue when some structures(like mansion or monument) still not generating while they're in activeStructures list. Otherwise, the solution leads to another bug - that structures(which has_structure tags differ from their name like has_structure/woodland_mansion and minecraft:mansion) will not get replaced lootTables. I will fix the bug in 0.3.0.