Cast `NULLReplacement` when `SQLType` is specified

[jpugliesi]

Some SQL dialects (like Clickhouse) do not automatically cast strings '%v' to the appropriate column type, resulting in an error when this is attempted. This causes an error when using a paginator.Rule on a non-string type column.

To circumvent this issue, the fix here explicitly casts the NULLReplacement value to the provided SQLType

[coveralls]

Pull Request Test Coverage Report for Build 5394388130

• 3 of 5 (60.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.5%) to 95.946%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
paginator/paginator.go	3	5	60.0%
<!--	Total:	3	5	60.0%	-->

Totals
Change from base Build 4999052293:	-0.5%
Covered Lines:	355
Relevant Lines:	370

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💛 - Coveralls

[pilagod]

@jpugliesi @nikicc That's awesome! Looks perfect to me. If there is no further discussion, I will merge it and release a new version to include this fix.

[jpugliesi]

Great, thank you @pilagod

[pilagod]

@jpugliesi @nikicc I just released v2.4.1 to include this PR. 💪

[nikicc]

@pilagod you're a rockstar 🤟 Thanks so much 🙏