feat(sqlite): add json_error_position fn

[IamTossan]

add json_error_position sqlite fn

related to

• Add missing sqlite json/jsonb functions and operators #4366

[weiznich]

Thanks for submitting. This looks good beside the small suggested change on the function signature.

[weiznich]

This function returns only null if the input value is null. That means we can write it as follows:

Suggested change

	fn json_error_position<X: TextOrNullableTextOrBinaryOrNullableBinary + SingleValue>(
	x: X,
	) -> Nullable<Integer>;
	fn json_error_position<X: TextOrNullableTextOrBinaryOrNullableBinary + MaybeNullableValue<Integer>>(
	x: X,
	) -> X::Out;

The MaybeNullableValue trait turns the output type X::Out into Nullable<Integer> if the input type is nullable.

[IamTossan]

Hey, I hope you're well.
Thank you for the review, I have taken care of it