[Subtask]: Automatically create tags on snapshots for Mixed Iceberg Format

[wangtaohz]

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Description

Automatically generate tags on a snapshot based on watermarks to help users achieve longer time travel by retaining a small number of snapshots.

We should support this feature for the Mixed Format Table

Parent issue

• #1354

Are you willing to submit PR?

• [X] Yes I am willing to submit a PR!

Code of Conduct

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