Enable DateTime64 as Version Column in ReplacingMergeTree

Why it matters

The feature allows users to use high-precision timestamps with the DateTime64 type for versioning in ReplacingMergeTree tables, improving the granularity and accuracy of version control for data deduplication and replacement.

How to use it

Define a ReplacingMergeTree table and specify a DateTime64 column as the version column in the table's sorting key or version field. This enables the table to distinguish versions based on DateTime64 values during merges.