Entities: Advanced filtering

[iLLiCiTiT]

Changelog Description

Added filters argument to entity methods to allow advanced filtering using filter conditions.

Additional review information

Advanced filtering does allow to filter entities in more sophisticated way with multiple conditions having or/and and also allows to filter by attribute values. Example can be found here.

Testing notes:

1. E.g. use one of the methods to filter entities by an attribute value.

Example filter

filters={
    "conditions": [
        {
            "key": "attrib.ftrackId",
            "operator": "eq",
            "value": "my-ftrack-id",
        }
    ],
    "operator": "and",
}