Add config flow to mystrom (#74719)

* rebase

* fixed review comments

* fix test

* Update tests

* increase test coverage

* implement some review comments

* Enhance device check for old FWs and add tests

* Reworked exception handling

* small code optimizations

* fix test

* Increase test coverage

* Update __init__.py

changed from hass.config_entries.async_setup_platforms(entry, PLATFORMS) to await hass.config_entries.async_forward_entry_setups(entry, PLATFORMS)

* Update __init__.py

remove spaces

* Bump python-mystrom to 2.2.0

* Migrate to get_device_info from python-mystrom

* Migrate to get_device_info from python-mystrom

* Update __init__.py

* update requirements_all.txt

* update config_flow

* fix tests

* Update homeassistant/components/mystrom/__init__.py

Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>

* Implemented review changes

* increase test coverage

* Implemented user defined title

* implemented user defined title

* Additional review comments

* fix test

* fix linter

* fix linter

* Update homeassistant/components/mystrom/models.py

Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>

* fix review comments

* fix missing import

* simplify

* Update homeassistant/components/mystrom/__init__.py

Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>

* Update homeassistant/components/mystrom/__init__.py

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* Update homeassistant/components/mystrom/config_flow.py

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* Update homeassistant/components/mystrom/config_flow.py

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* Update homeassistant/components/mystrom/config_flow.py

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* Update tests/components/mystrom/test_init.py

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* Update tests/components/mystrom/test_init.py

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* Update tests/components/mystrom/test_init.py

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* Update tests/components/mystrom/test_init.py

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* Update homeassistant/components/mystrom/light.py

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* Update homeassistant/components/mystrom/switch.py

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* fix review comments

* fix review comments

* Update tests/components/mystrom/test_config_flow.py

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* Update tests/components/mystrom/test_config_flow.py

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* fix review comment

* Update tests/components/mystrom/test_config_flow.py

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* Update tests/components/mystrom/test_config_flow.py

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* Update tests/components/mystrom/test_config_flow.py

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* Update tests/components/mystrom/test_config_flow.py

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* Update tests/components/mystrom/test_config_flow.py

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* Update tests/components/mystrom/test_config_flow.py

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---------

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homeassistant/components/mystrom/models.py

@@ -0,0 +1,14 @@
+"""Models for the mystrom integration."""
+from dataclasses import dataclass
+from typing import Any
+
+from pymystrom.bulb import MyStromBulb
+from pymystrom.switch import MyStromSwitch
+
+
+@dataclass
+class MyStromData:
+    """Data class for mystrom device data."""
+
+    device: MyStromSwitch | MyStromBulb
+    info: dict[str, Any]