feat: support batch mode

[sundy-li]

example

@udf(
    name="gcd_batch",
    input_types=["INT", "INT"],
    result_type="INT",
    batch_mode=True,
)
def gcd_batch(x: list[int], y: list[int]) -> list[int]:
    def gcd_single(x_i, y_i):
        if x_i == None or y_i == None:
            return None
        while y_i != 0:
            (x_i, y_i) = (y_i, x_i % y_i)
        return x_i
    return [gcd_single(x_i, y_i) for x_i, y_i in zip(x, y)]

fixes #9