Support writing V3 tables

[Fokko]

Feature Request / Improvement

Support writing V3 tables

[b-phi]

Hi @Fokko, what is actually required for this? I was hoping to create some v3 tables using the new nanosecond timestamp support, but encountered an error that pointed to this issue

NotImplementedError: Writing V3 is not yet supported

[Fokko]

@b-phi The V3 spec is not officially adopted yet, therefore we still fence writing V3 tables because stuff might still change.

[b-phi]

As I understand the v3 spec has been finalized. How can I help with supporting v3 writes from pyiceberg?

[kevinjqliu]

@b-phi i've added V3 tags for issues to support Iceberg V3
https://github.com/apache/iceberg-python/issues?q=state%3Aopen%20label%3A%22V3%22

Also here are some of the requirements to write V3 tables https://iceberg.apache.org/spec/#version-3