Implement `empty` function

[izveigor]

Is your feature request related to a problem or challenge?

Summary

Characteristic	Description
Function name:	empty
Aliases:	-
Original function?:	No
Function Description:	ClickHouse: Returns 1 for an empty array or 0 for a non-empty array.
Sources:	Concept ClickHouse

Examples:

SELECT empty([])

Query id: 42b6e940-aada-4bfb-afb8-77d8288a0335

┌─empty([])─┐
│         1 │
└───────────┘

SELECT empty([1, 2, 3])

Query id: 3a22e137-ffe4-4951-bc6e-27d85a150c95

┌─empty([1, 2, 3])─┐
│                0 │
└──────────────────┘

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Additional context

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