Support `PartitionStats`

[jonathanc-n]

Is your feature request related to a problem or challenge?

We currently have PartitionStatisticsFile however we do not yet have the actual file as mentioned in spec here.

The steps from this pr would be to:

• Add support for PartitionStats
• Add support for writing and reading from avro
• Add support for reading from parquet
• Add support for a partition statistics handler similar to the java implemenetation

Describe the solution you'd like

Implement PartitionStats

Willingness to contribute

I can contribute to this feature independently

[jonathanc-n]

@liurenjie1024 Is there anything I am missing here, does this require something else?