feat(rust): support additional types for partition values

[wjones127]

Description

We currently only support integers and strings for partition values. We should support the remaining types described at:

https://github.com/delta-io/delta/blob/master/PROTOCOL.md#partition-value-serialization

This is currently implemented in this function:

delta-rs/rust/src/writer/utils.rs

Lines 122 to 152 in fac6566

	pub(crate) fn stringified_partition_value(
	arr: &Arc<dyn Array>,
	) -> Result<Option<String>, DeltaWriterError> {
	let data_type = arr.data_type();
	if arr.is_null(0) {
	return Ok(None);
	}
	let s = match data_type {
	DataType::Int8 => as_primitive_array::<Int8Type>(arr).value(0).to_string(),
	DataType::Int16 => as_primitive_array::<Int16Type>(arr).value(0).to_string(),
	DataType::Int32 => as_primitive_array::<Int32Type>(arr).value(0).to_string(),
	DataType::Int64 => as_primitive_array::<Int64Type>(arr).value(0).to_string(),
	DataType::UInt8 => as_primitive_array::<UInt8Type>(arr).value(0).to_string(),
	DataType::UInt16 => as_primitive_array::<UInt16Type>(arr).value(0).to_string(),
	DataType::UInt32 => as_primitive_array::<UInt32Type>(arr).value(0).to_string(),
	DataType::UInt64 => as_primitive_array::<UInt64Type>(arr).value(0).to_string(),
	DataType::Utf8 => {
	let data = arrow::array::as_string_array(arr);
	data.value(0).to_string()
	}
	// TODO: handle more types
	_ => {
	unimplemented!("Unimplemented data type: {:?}", data_type);
	}
	};
	Ok(Some(s))
	}

Use Case

Related Issue(s)

[wjones127]

We should make sure to test this well to avoid issues like those in #1146.