Rule Processor

Please add the following additions to the minecraft:rule processor:

1. A random_tag_match predicate type

2. The ability to preserve block states for block_match and random_block_match predicate types. If you want to replace stairs or slabs with their mossy variant for example, they are placed using default blockstates (facing north). You can only prevent this by using a blockstate_match rule for every possible combination of the block's states.