[FLINK-25565][Formats][Parquet] write and read parquet int64 timestamp

[tweise]

backport #18304

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CI report:

• a7c9771 Azure: SUCCESS

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[MartijnVisser]

@tweise Was this a bug? If so, we should change the type of ticket. Don't forget to add 1.18.1 as a fix version then as well.

Edit: Ah it's a subtask, so you can't have a bug type for that.

[tweise]

@MartijnVisser good point - strictly speaking it is a bug, let me add a comment to the ticket.

[mbalassi]

Approving it based on #18304, as the diff is the same. Thanks for the backport, @tweise.

[mxm]

No time unit means drop the value? Should we throw an error?

[tweise]

Good catch. LogicalTypeAnnotation.TimeUnit has only the 3 values that are all covered, so there should neither be a practical danger of dropping the value nor big risk of throwing an exception under default for clarity. It is also more of a stylistic concern that we can deal with in the master branch. I will open a PR there.

[mxm]

I would throw an exception for defensive programming.