Aggregate: And/Or for inline array filters

[AndrewSisley]

Part of #28

Broken out of #392

For example the following test fails as the filter does not support _and/_or.

func TestQueryInlineIntegerArrayWithsWithCountWithAndFilterAndPopulatedArray(t *testing.T) {
	test := testUtils.QueryTestCase{
		Description: "Simple inline array, filtered count of integer array",
		Query: `query {
					users {
						Name
						_count(FavouriteIntegers: {filter: {_and: [{_gt: -2}, {_lt: 2}]}})
					}
				}`,
		Docs: map[int][]string{
			0: {
				(`{
				"Name": "Shahzad",
				"FavouriteIntegers": [-1, 2, -1, 1, 0, -2]
			}`)},
		},
		Results: []map[string]interface{}{
			{
				"Name":   "Shahzad",
				"_count": 4,
			},
		},
	}

	executeTestCase(t, test)
}