Support UUID type

[ancoron]

It would be nice to also allow supporting the UUID type as specified here (for interoperability):

• https://github.com/apache/parquet-format/blob/master/LogicalTypes.md#uuid

[aykut-bozkurt]

We use arrow, in memory columnar format, as intermediate format. UUID arrow arrays are not yet supported to be written into parquet file. But there is some PR to enable extension type concept in arrow spec. After extension types are supported, we can natively write uuid and json to parquet. (they are serialized as text for now)