Add support for unique_id

[mxr]

(need to figure out how to test this)

Resolves #52

[HarvsG]

(need to figure out how to test this)

    config = {
        "binary_sensor": {
            "name": "Test_Binary",
            "platform": "bayesian",
            "unique_id": "3b4c9563-5e84-4167-8fe7-8f507e796d72",
            "device_class": "connectivity",
            "observations": [
                {
                    "platform": "state",
                    "entity_id": "sensor.test_monitored",
                    "to_state": "off",
                    "prob_given_true": 0.8,
                    "prob_given_false": 0.4,
                }
            ],
            "prior": 0.2,
            "probability_threshold": 0.32,
        }
    }

    hass.states.async_set("sensor.test_monitored", "off")
    await hass.async_block_till_done()

    assert await async_setup_component(hass, "binary_sensor", config)
    await hass.async_block_till_done()

    entity_registry = async_get_entities(hass)
    assert (
        entity_registry.entities["binary_sensor.test_binary"].unique_id
        == "bayesian-3b4c9563-5e84-4167-8fe7-8f507e796d72"
    )

This is how I test unqiue-ids. Baiscally just create an instance of your entity and then look for it's unique_id in the entity registry.

[HarvsG]

self._attr_unique_id = unique_id and f"climate-group-{unique_id}"

self._attr_unique_id is what home assistant looks for when getting unique IDs
https://developers.home-assistant.io/docs/core/entity/

[mxr]

Thanks for the review @HarvsG I am expecting home-assistant/core#77737 to ship so I am closing this PR for now.