[2.x] Add where-in clausule

[gregorip02]

Json Format

{
    // Using explicit attributes
    "whereIn": {
        "column": "id", // Optional, default is "id"
        "value": [1, 2, 3]
    },

    // Using implicit attributes
    "whereIn": ["id", [1, 2, 3]],

    // Using super implicit attributes, this filter by the primary key
    "whereIn": [1, 2, 3]
}