Add support for Iceberg table identifiers with special characters

[regadas]

This is a proposal that uses Json representation of Iceberg TableIdentifier to support special characters, more specifically, cases when tables contain a dot in the name.

Fixes: #33292

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[regadas]

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Reminder, please take a look at this pr: @Abacn @Abacn

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[regadas]

@ahmedabu98 poking you here as well; I'll rebase this one soon

[ahmedabu98]

LGTM, thanks for adding this!

Can you trigger the integration tests here too?