SNOW-1727532 Set number of values for repeated fields

[sfc-gh-alhuang]

This PR includes following change:

1. Set numberOfValues for repeated fields (e.g. map, list) and used it in EP file registration.
2. Increment null count for all sub-columns of a null column.
3. Use hash for approximate NDV for string and bytes.
4. Fix NPE when inserting null to a structured column, throwing SF custom exception instead.
5. Added extendedMetadataSize and metadataSize fields for EP registration.
6. Address comments of #851