Add config flow and device registry to fritzbox integration (#31240)

* add config flow

* fix pylint

* update lib

* Update config_flow.py

* remote devices layer in config

* add default host

* avoid double setups of entities

* remove async_setup_platform

* store entities in hass.data

* pass fritz connection together with config_entry

* fritz connections try no4 (or is it even more)

* fix comments

* add unloading

* fixed comments

* Update config_flow.py

* Update const.py

* Update config_flow.py

* Update __init__.py

* Update config_flow.py

* Update __init__.py

* Update __init__.py

* Update config_flow.py

* Update __init__.py

* Update __init__.py

* Update __init__.py

* Update config_flow.py

* add init tests

* test unloading

* add switch tests

* add sensor tests

* add climate tests

* test target temperature

* mock config to package

* comments

* test binary sensor state

* add config flow tests

* comments

* add missing tests

* minor

* remove string title

* deprecate yaml

* don't change yaml

* get devices async

* minor

* add devices again

* comments fixed

* unique_id fixes

* fix patches

* Fix schema

Co-authored-by: Martin Hjelmare <marhje52@gmail.com>

tests/components/fritzbox/conftest.py

@@ -0,0 +1,14 @@
+"""Fixtures for the AVM Fritz!Box integration."""
+from unittest.mock import Mock, patch
+
+import pytest
+
+
+@pytest.fixture(name="fritz")
+def fritz_fixture() -> Mock:
+    """Patch libraries."""
+    with patch("homeassistant.components.fritzbox.socket") as socket, patch(
+        "homeassistant.components.fritzbox.Fritzhome"
+    ) as fritz, patch("homeassistant.components.fritzbox.config_flow.Fritzhome"):
+        socket.gethostbyname.return_value = "FAKE_IP_ADDRESS"
+        yield fritz