feat: AoS tuple sketch

[proost]

issue: #475

I change original design. I will follow same design with array of doubles sketch, that allow allocator for container not the element of container. I think using standard allocator for string is fine, for consistency of code following same design is good And even if we use custom allocator, we can't use completely for string allocation because of serialization and deserialization.

even though above reasons, if want to change to orignal design, it is acceptable.

[coveralls]

Pull Request Test Coverage Report for Build 21757025873

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

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Details

• 215 of 264 (81.44%) changed or added relevant lines in 3 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.3%) to 98.533%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
common/include/third_party/utf8cpp/utf8/core.h	62	111	55.86%

Totals
Change from base Build 20975908107:	-0.3%
Covered Lines:	17263
Relevant Lines:	17520

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💛 - Coveralls