* Reorganised so that each module part imports from the mod.rs
This allows for coherent types within the module to be updated
simply.
* Updated imports to the new mercator_db organisation
At this time, the data is loaded from a set of files and the following
end points are available:
- /health
- /spaces (POST)
- /spaces/{id} (GET)
- /cores (POST)
- /cores/{id} (GET)
- /cores/{id}/spatial_objects (POST)
- /cores/{id}/spatial_objects/{oid} (GET)
The implement ation is currently minimal and does not allow for filters
or parameters on any of the handlers.
