feat(rust/sedona-functions): Add emoji shorthand for common ST_ functions

[paleolimbot]

As part of our ongoing attempt to innovate on spatial SQL, this PR adds emoji shorthand for most functions which (1) improve expressiveness, (2) helps more SQL fit on one line and (3) reduces the number of bytes required for large SQL queries (important for AI generation).

The notable change is the addition of the custom Dialect that relaxes the strict requirement on characters permitted in an identifier sequence, which is a standalone improvement as it also allows other non-ASCII characters in function names as well.

# pip install "apache-sedona[db]"
import sedona.db

sd = sedona.db.connect()
sd.options.interactive = True

# Creators
sd.sql("""
SELECT
    ST_📍(0, 1) AS pt,
    ST_⏱️(0, 1, 2) AS ptm,
    ST_📝('MULTIPOINT Z (0 0 10, 1 1 12)') AS mpt
""").to_view("ex")

# Transformers
sd.sql("SELECT ST_💩(mpt) FROM ex")

# Bounds
sd.sql("""
SELECT
    ST_⬅️(mpt),
    ST_⬇️(mpt),
    ST_➡️(mpt),
    ST_⬆️(mpt),
    ST_🏝️(mpt),
    ST_🏔️(mpt),
    ST_✉️(mpt)
FROM ex
""")

# Affine transform wrappers
sd.sql("""
SELECT
    ST_🚚(mpt, 2, 3),
    ST_🌀(mpt, 45),
    ST_⚖️(mpt, 0.5, 0.25),
    ST_🪞(mpt)
FROM ex
""")

Current summary of proposed syntax:

Function	Emoji		Function	Emoji
st_dump	💩		st_reverse	🔙
st_x	❌		st_isempty	🕳️
st_y	🤷		st_isclosed	🔒
st_z	💤		st_iscollection	🗂️
st_m	Ⓜ️		st_interiorringn	💍
st_xmin	⬅️		st_translate	🚚
st_xmax	➡️		st_numgeometries	🔢
st_ymin	⬇️		st_geometrytype	🔍
st_ymax	⬆️		st_geometryn	🎰
st_zmin	🏝️		st_scale	⚖️
st_zmax	🏔️		st_flipcoordinates	🪞
st_mmin	⏬		st_makeline	📏
st_mmax	⏫		st_pointn	👆
st_geomfromwkt	📝		st_envelope	✉️
st_geogfromwkt	🌏		st_dimension	📐
st_geomfromewkt	📜		st_azimuth	🧭
st_geomfromwkb	📥		st_astext	📖
st_geomfromwkbunchecked	🤞		st_asbinary	💾
st_geogfromwkb	🌐		st_asewkb	📦
st_geomfromewkb	📨		st_affine	🎭
st_point	📍		st_rotate	🌀
st_geogpoint	🌍		st_rotatex	🎡
st_pointz	⛰️		st_rotatey	🎠
st_pointm	⏱️		st_points	✨
st_pointzm	🗻		st_npoints	#️⃣
st_force2d	2️⃣		st_hasz	🧗
st_force3d	3️⃣		st_hasm	⌚
st_force3dm	🧊		st_zmflag	🚩
st_force4d	4️⃣		st_startpoint	🏁
st_srid	🆔		st_endpoint	🔚
st_crs	🎯		st_setsrid	🏷️
st_setcrs	📌