Add Hive and Iceberg Load benchmark

[PingLiuPing]

loading (insert) benchmark is missing in pbench, this PR add the initial files for loading benchmark. It includes test files for hive and iceberg connector, both native and Java.
The data is loaded from tpch connector on the fly.

Future enhancements are required to make the benchmark run in stage such as prepare stage, main stage, cleanup stage etc.

[PingLiuPing]

@wanglinsong @ethanyzhang Sorry for the late response, this PR slipped from my mind. I addressed your comments, can you please take another look? Thanks.

[wanglinsong]

I believe the DDL to create tables are the same across all scale factors. Can you parameterize or remove the hardcoded schema name: tpch.sf100.?

FROM tpch.sf100.customer;

[PingLiuPing]

believe the DDL to create tables are the same across all scale factors. Can you parameterize or remove the hardcoded schema name: tpch.sf100.?

FROM tpch.sf100.customer;

Thanks, at the current framework I think this needs lots of work to support that.

[wanglinsong]

believe the DDL to create tables are the same across all scale factors. Can you parameterize or remove the hardcoded schema name: tpch.sf100.?
FROM tpch.sf100.customer;

Thanks, at the current framework I think this needs lots of work to support that.

Oh, this is an embedded connector. This is not an issue at all. Please ignore.

[PingLiuPing]

Hi @wanglinsong Thanks for your comments, do you think this PR is ready to be merged? Anything else you want me to change?