feat(geotypes): rename domains and add geography variants

[pyramation]

Summary

Renames the legacy PostGIS geometry domains and adds new geography (spherical/geodetic) domain variants:

Old	New	Type
geolocation	geo_point	geometry(Point, 4326)
geopolygon	geo_polygon	geometry(Polygon, 4326)
—	geography_point	geography(Point, 4326)
—	geography_polygon	geography(Polygon, 4326)

Geography domains use geodetic calculations on the sphere — ST_Distance returns meters, ST_DWithin uses meters, and results account for Earth's curvature. Geometry domains remain planar/flat.

Each domain has a full set of deploy/verify/revert migration files. Smart comment tags updated accordingly (e.g. pgpmInternalTypeGeoLocation → pgpmInternalTypeGeoPoint).

Companion PR: constructive-io/constructive-db#669 (same changes for the in-repo copy of geotypes).

Review & Testing Checklist for Human

• Breaking change: Confirm no downstream consumers depend on the old geolocation/geopolygon domain names or the old pgpmInternalTypeGeoLocation smart comment tag. This is a hard rename with no migration path.
• Smart comment tags: Verify pgpmInternalTypeGeoPoint, pgpmInternalTypeGeoPolygon, pgpmInternalTypeGeographyPoint, pgpmInternalTypeGeographyPolygon are the correct tag names expected by the graphile-postgis plugin and any PostGraphile schema generation.
• Bundled SQL (pgpm-geo-types--0.15.3.sql): Version number was not bumped — confirm this is intentional given the package.json is at 0.19.0. If the bundled SQL filename should reflect a new version, it needs updating.
• Revert files use DROP TYPE (not DROP DOMAIN) — this matches the existing convention and works in PostgreSQL, but worth a glance.

Recommended test plan: Run cd packages/geotypes && pnpm test locally against a PostGIS-enabled Postgres instance to verify all 6 tests pass (3 geometry, 3 geography including the SF↔NYC distance check).

Notes

• The constructive repo (graphile-postgis plugin) does not need changes — it detects geometry/geography types dynamically via PostGIS codec introspection, not by domain name.

Link to Devin session: https://app.devin.ai/sessions/2497d12c456844cc93429d027727addd
Requested by: @pyramation

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