Add translations for entity names

[caibinqing]

Here gives a simplest modification,
It can solve the translation problems of most commonly used entities.

have tested on HA 2023.7 and 2024.7

related issue: #1405

[caibinqing]

Not so good, names like ble mesh zigbee should be kept.

[caibinqing]

Reduced coverage of the if, this version should not incorrectly translate too many entities.

The complete translation I think still needs to mark each attr separately, for main feature (name=None), or use translation_key, or use default device class translation.

[AlexxIT]

Why you have closed this? Bad solution?

[caibinqing]

Sorry, accidentally deleted the branch.
The simple if is not very good yet, I want to re-implement it, based on the idea mentioned above. What do you think?

[AlexxIT]

I haven't check it yet. I don't understand how translations work in Hass at all. It's complicated.

[caibinqing]

Done, please take a look.

Entity naming will be decided in the following order:

1. set "name": None: for entity which is the main feature of a device, name would be same as device name.
2. set "translation_key": <some string>: use translations in translations/language.json
3. if entity._default_to_device_class_name() returns Ture, it would be named by its device class.
4. use previous behavior: attr.replace("_", " ").title().

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For feature entity translation placeholders, HA 2024.2 is required