Use ryu and fastfloat for double serialization/deserialization

[paleolimbot]

Improves WKT parsing performance by ~1.5x and WKT printing performance by >6x. More importantly, this makes both locale-independent.

import geoarrow.pyarrow as ga
import pyarrow as pa
import numpy as np

n = int(1e6)
xs = np.random.random(n)
ys = np.random.random(n)
points = ga.point().wrap_array(pa.StructArray.from_arrays([xs, ys], names=["x", "y"]))
points_wkt = ga.as_wkt(points)


%timeit ga.as_geoarrow(points_wkt)
#> Before:
#> 206 ms ± 713 µs per loop (mean ± std. dev. of 7 runs, 1 loop each)
#> After:
#> 140 ms ± 351 µs per loop (mean ± std. dev. of 7 runs, 10 loops each)
%timeit ga.as_wkt(points)
#> Before:
#> 634 ms ± 1.37 ms per loop (mean ± std. dev. of 7 runs, 1 loop each)
#> After:
#> 83 ms ± 339 µs per loop (mean ± std. dev. of 7 runs, 10 loops each)

[codecov]

Codecov Report

Merging #49 (960e143) into main (4dac0bd) will increase coverage by 1.07%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #49      +/-   ##
==========================================
+ Coverage   92.48%   93.56%   +1.07%     
==========================================
  Files          25       30       +5     
  Lines        4271     5003     +732     
  Branches       59        0      -59     
==========================================
+ Hits         3950     4681     +731     
- Misses        288      322      +34     
+ Partials       33        0      -33     

Files Changed	Coverage Δ
python/src/geoarrow/pandas.py	93.46% <100.00%> (ø)
python/src/geoarrow/pyarrow/_compute.py	98.04% <100.00%> (ø)
python/src/geoarrow/pyarrow/_kernel.py	94.25% <100.00%> (ø)
src/geoarrow/double_parse_fast_float.cc	100.00% <100.00%> (ø)
src/geoarrow/double_print.c	100.00% <100.00%> (ø)
src/geoarrow/kernel.c	94.49% <100.00%> (+2.58%)	⬆️
src/geoarrow/util.c	77.77% <100.00%> (+2.77%)	⬆️
src/geoarrow/wkt_reader.c	97.58% <100.00%> (+1.42%)	⬆️
src/geoarrow/wkt_writer.c	98.50% <100.00%> (+0.69%)	⬆️
src/geoarrow/wkx_testing.hpp	94.11% <100.00%> (ø)

... and 11 files with indirect coverage changes