Add AND and OR statement to where clause.

[ranaaterning]

Is your feature request related to a problem? Please describe.
When creating a product filter for example, you will often want to filter the same field more than once. Then it would be great to have the AND added to the where clause. The same goes for the OR.

Describe the solution you'd like
This type of solution would be great:
where: {OR: [ {categoryName: "All"}, {categoryName: "pants" } ] }

Describe alternatives you've considered
Perhaps enabling support for the product type when using the tax Query plugin.