Refactor Freebox : add config flow + temperature sensor + signal dispatch (#30334)

* Add config flow to Freebox

* Add manufacturer in device_tracker info

* Add device_info to sensor + switch

* Add device_info: connections

* Add config_flow test + update .coveragerc

* Typing

* Add device_type icon

* Remove one error log

* Fix pylint

* Add myself as CODEOWNER

* Handle sync in one place

* Separate the Freebox[Router/Device/Sensor] from __init__.py

* Add link step to config flow

* Make temperature sensors auto-discovered

* Use device activity instead of reachablility for device_tracker

* Store token file in .storage

Depending on host if list of Freebox integration on the future without breaking change

* Remove IP sensors + add Freebox router as a device with attrs : IPs, conection type, uptime, version & serial

* Add sensor should_poll=False

* Test typing

* Handle devices with no name

* None is the default for data

* Fix comment

* Use config_entry.unique_id

* Add async_unload_entry with asyncio

* Add and use bunch of data size and rate related constants (#31781)

* Review

* Remove useless "already_configured" error string

* Review : merge 2 device & 2 sensor classes

* Entities from platforms

* Fix unload + add device after setup + clean loggers

* async_add_entities True

* Review

* Use pathlib + refactor get_api

* device_tracker set + tests with CoroutineMock()

* Removing active & reachable from tracker attrs

* Review

* Fix pipeline

* typing

* typing

* typing

* Raise ConfigEntryNotReady when HttpRequestError at setup

* Review

* Multiple Freebox s

* Review: store sensors in router

* Freebox: a sensor story