Refactor torii grpc

[broody]

• Move query types from dojo-types to torii
• Subscription query only takes key clause
• Renamed EntityQuery to Query

Subscription endpoint message changed from

"queries" : [
    {
        "model" : "ModelName",
        "clause" : {
            "keys" : {
                "keys" : [ ... ]
            }
        }
    }
]

to

"entities_keys": [
    {
        "model": "ModelName",
        "keys": [ ... ]
    }
]

[tarrencev]

lgtm