feat(vortex-geo): add native geoarrow.box bounding-box type (#8746)

## Rationale for this change

Groundwork for spatial chunk-pruning: the upcoming geometry-bounds
zone-map needs to store bounding boxes as a first-class geometry so the
pruning rules can reuse the existing `ST_Distance` / `ST_Intersects` /
`ST_Contains` kernels on them instead of hand-rolled box math.

## What changes are included in this PR?

- New `Rect` extension type (`vortex.geo.box`, GeoArrow's
`geoarrow.box`): an axis-aligned box stored as `Struct<xmin, ymin[,
zmin][, mmin], xmax, ymax[, zmax][, mmax]>` of non-nullable `f64`.

---------

Signed-off-by: Nemo Yu <zyu379@wisc.edu>

Author: HarukiMoriarty

vortex-geo/src/extension/mod.rs

@@ -8,6 +8,7 @@ mod multipoint;
 mod multipolygon;
 mod point;
 mod polygon;
+mod rect;
 mod wkb;
 
 use std::fmt::Display;
@@ -37,6 +38,7 @@ pub use multipoint::*;
 pub use multipolygon::*;
 pub use point::*;
 pub use polygon::*;
+pub use rect::*;
 use vortex_array::ArrayRef;
 use vortex_array::ExecutionCtx;
 use vortex_array::IntoArray;
@@ -63,6 +65,7 @@ fn is_native_geometry(dtype: &DType) -> bool {
             || ext.is::<Polygon>()
             || ext.is::<MultiLineString>()
             || ext.is::<MultiPolygon>()
+            || ext.is::<Rect>()
     })
 }
 
@@ -110,6 +113,8 @@ pub(crate) fn geometries(
         multilinestring_geometries(&storage, ctx)
     } else if ext.is::<MultiPolygon>() {
         multipolygon_geometries(&storage, ctx)
+    } else if ext.is::<Rect>() {
+        rect_geometries(&storage, ctx)
     } else {
         vortex_bail!("geo: unsupported geometry extension {}", array.dtype())
     }