[BUG-1183]: Display geo types as 'geometry' / 'geography' instead of wkb

[petern48]

Now it properly displays the geometry/geography type in the table

Now:

> select st_centroid(st_geomfromtext('point (1 1)'));
┌──────────────────────────────────────────────────┐
│ st_centroid(st_geomfromwkt(Utf8("point (1 1)"))) │
│                     geometry                     │
╞══════════════════════════════════════════════════╡
│ POINT(1 1)                                       │
└──────────────────────────────────────────────────┘

Before:

select st_centroid(st_geomfromtext('point (1 1)'));
┌──────────────────────────────────────────────────┐
│ st_centroid(st_geomfromwkt(Utf8("point (1 1)"))) │
│                        wkb                       │
╞══════════════════════════════════════════════════╡
│ POINT(1 1)                                       │
└──────────────────────────────────────────────────┘

[petern48]

Fixes to CI here: #22

[paleolimbot]

Pending green CI when #22 merges, but looks good to me!