[Json] Support FixedSizeList in json decoder

[liamzwbao]

Which issue does this PR close?

• Closes Support FixedSizeList in arrow-json reader #9714.

Rationale for this change

What changes are included in this PR?

Implement decoder for FixedSizeList

Are these changes tested?

Yes

Are there any user-facing changes?

New decoding type supported

[Jefffrey]

There's a fun little degenerate test case here:

    #[test]
    fn test_fixed_size_list_zero_size() {
        let buf = r#"
        {"a": []}
        {"a": null}
        {"a": []}
        "#;

        let field = Field::new_list_field(DataType::Int32, true);
        let schema = Arc::new(Schema::new(vec![Field::new(
            "a",
            DataType::FixedSizeList(Arc::new(field), 0),
            false,
        )]));

        let batches = do_read(buf, 1024, false, false, schema);
        assert_eq!(batches.len(), 1);

        let col = batches[0].column(0).as_fixed_size_list();
        assert_eq!(col.len(), 3);
        assert_eq!(col.value_length(), 0);

        let values = col.values().as_primitive::<Int32Type>();
        assert!(values.values().is_empty());
    }

It seems to panic within struct array decoding. Could be worth exploring in this PR if there is capacity, though considering this PR is adding a new feature I wouldn't block it on this case.

[Jefffrey]

Is it worth considering using NullBufferBuilder here instead?

[alamb]

Filed a ticket to track

• Use NullBufferBuilder when reading json #9781

[alamb]

It seems to panic within struct array decoding. Could be worth exploring in this PR if there is capacity, though considering this PR is adding a new feature I wouldn't block it on this case.

Filed a ticket to track

• Bug converting json to fixed list of zero size #9780

[alamb]

Thank you @liamzwbao and @Jefffrey

[liamzwbao]

Thanks for the review, @Jefffrey and @alamb! Was a bit occupied last week, will address the feedbacks in a followup PR

[alamb]

Thank you ! I was trying to finalize the release content and keep things moving.