Feature Request: support st_cast

[harryprince]

see apache/sedona#350

[harryprince]

type	description
POINT	zero-dimensional geometry containing a single point
LINESTRING	sequence of points connected by straight, non-self intersecting line pieces; one-dimensional geometry
POLYGON	geometry with a positive area (two-dimensional); sequence of points form a closed, non-self intersecting ring; the first ring denotes the exterior ring, zero or more subsequent rings denote holes in this exterior ring
MULTIPOINT	set of points; a MULTIPOINT is simple if no two Points in the MULTIPOINT are equal
MULTILINESTRING	set of linestrings
MULTIPOLYGON	set of polygons
GEOMETRYCOLLECTION	set of geometries of any type except GEOMETRYCOLLECTION