[exdal]

This is like third implementation of modular map loading, combining my local tg_maploader, maploader and other temporary branches into this.

The idea is to make a codebase agnostic maploader. This PR will probably have a follow up (it's time to use github's stack PR thing)

TODO

• TOML parser API
• process_modular_root hook
• demir_place_modular intrinsic
• open module in window button next to [dd] < >
• modifications inside module should reflect into all open instances
• the coop question
• random rooms