Support new data in `map.json` files

[GriffinRichards]

Some new data has been moved to map.json files in the pret repos that we should have built-in support for:

• [ ] Heal Location data (https://github.com/pret/pokeemerald/pull/2034)
• [ ] Local IDs (https://github.com/pret/pokeemerald/pull/2047)