Describe the solution you'd like
Include a special path marker that can be used to read blockstate properties instead of NBT.

Why is this feature needed
Blockstates are currently block data that can vary between two blocks of the same type but there is no way to differentiate xp/reqs based on this information. This is a limitation which is sensible to overcome.

Additional context

• refactor "nbt" in config terms to "data" to be more obvious
• invocation of the path reader may require additional parameters to allow passing of block properties.