feat(python/sedonadb): Expose random_geometry as a Python function

[paleolimbot]

We've been using the SQL table function sd_random_geometry() quite a bit for testing and benchmarking and I think this may make those types of simulations much nicer to write.

This still needs a bit of testing/moving of the parameter validation to Rust but it's not essential for release. I'll circle back after working on some more releasy-type tasks.

import sedonadb.testing

sedonadb.testing.random_geometry(
    10,
    geometry_type="MultiPolygon",
    num_parts=(1, 4),
    hole_rate=1,
    num_vertices=(3, 5),
    size=20,
).to_pandas().plot()

[petern48]

This reminds me that when I was writing up the pytest-benchmarking code, I realized it would be nice to have a random geometry rust function (instead of a table provider) that returns a single column, so that we could create multiple unique random geometry columns in a single query to use with functions that take two geometry inputs (e.g predicates). I can't think of many other use cases tho, so it doesn't seem very high priority.