[Feature Request] [BVPixel] Allow BVTransactionItem quantity type to be a double instead of int

[alexei-fando-instacart]

Feature Request

BVTransactionItem object is limited because it requires quantity to be an integer. Please make it a double instead.
Many products are purchased using non-integer quantities, for example, products which are sold by weight.

Alternatively consider allowing specifying a map of custom properties for the BVTransactionItem object. The BVTransactionEvent object offers setting a custom map, but the item does not.