This is a partial migration of https://github.com/openmaptiles/openmaptiles/pull/785
* Use `import-data` instead of `import-lakelines`, `import-water`, and `import-natural-earth`
* Upgrade docker-compose.yml to version 2.3 (allows some extra env var usage in yaml file itself)
* Remove `openmaptiles-tools:latest` usage -- no longer needed, can use current version 4.1
* `db-start` does not do a container recreation in case docker-compose.yml definition has changed.
* a few minor cleanups in quickstart.sh
import-wikidata should run before import-sql, and v4.1 allows for that.
Also it optimizes the wd_names table to just be a simple Wikidata ID -> labels lookup, with a proper index.
Minor other changes:
* `test-perf-null` target is now part of the Makefile
* `./data/osmstat.txt` is no longer created
* area download file now in this format: `${osm_area}-latest.osm.pbf`
* Switch OMT to use the new tools v4.0.0
* borders are dynamically generated from the PBF file instead of downloading a prepared CSV file
* all tools are executed as current user instead of root, thus files are easier to modify/delete if needed
* all data is stored in the local file system instead of docker volumes (Docker currently has a limitation of non-root operation for internal volumes). This also makes it easier to examine and test it.
* New `init-dirs` make target creates all the needed dirs - `build, data, cache`
* `make clean` deletes the whole `build` dir instead of individual files.
* `clean-docker` for backward compatibility deletes `cache` dirs (it used to be a volume)
* all `psql` calls are now done with `ON_ERROR_STOP=1`
* got rid of `pgclimb-*` targets -- same results can be done with `psql` (`pgclimb-list-views` & `pgclimb-list-tables` renamed to `list-views` and `list-tables`)
* rail stations
* Create 'railway' POI class with 'station' and 'halt' subclasses
* Introduce subway stops as POI
* Revert unwanted changes in .env and openmaptiles.yaml
* Remove halt key from documentation
* Distinguish aeroway and railway station, add tram_stop
