Add support for V2C Trydan 2.1.7 (#117147)

* Support for firmware 2.1.7

* add device ID as unique_id

* add device ID as unique_id

* add test device id as unique_id

* backward compatibility

* move outside try

* Sensor return type

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* not needed

* make slave error enum state

* fix enum

* Update homeassistant/components/v2c/sensor.py

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* Update homeassistant/components/v2c/strings.json

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* Update homeassistant/components/v2c/strings.json

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

* simplify tests

* fix misspellings from upstream library

* add sensor tests

* just enough coverage for enum sensor

* Refactor V2C tests (#117264)

* Refactor V2C tests

* fix rebase issues

* ruff

* review

* fix https://github.com/home-assistant/core/issues/117296

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Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>

.coveragerc

@@ -1528,7 +1528,6 @@ omit =
     homeassistant/components/v2c/coordinator.py
     homeassistant/components/v2c/entity.py
     homeassistant/components/v2c/number.py
-    homeassistant/components/v2c/sensor.py
     homeassistant/components/v2c/switch.py
     homeassistant/components/vallox/__init__.py
     homeassistant/components/vallox/coordinator.py