Remove unneeded vesync device base class

[cdnninja]

Proposed change

This entity is used in select spots where other platforms aren't. However this creates more of a challenge as we add items. Quick example switches use it but it isn't correct for items like "Screen on control" which we will add for humidifiers. I believe easier to place it where it is expected and keep the base entity on items that are universal.

Type of change

• Dependency upgrade
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• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

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• This PR fixes or closes issue: fixes #
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[home-assistant]

Hey there @markperdue, @webdjoe, @TheGardenMonkey, mind taking a look at this pull request as it has been labeled with an integration (vesync) you are listed as a code owner for? Thanks!

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[cdnninja]

@iprak

[joostlek]

You can remove all these details properties as they are unused.

Also, while you are improving the code, can you also do a pass to add typing to everything? That massively helps reviewing :D

[home-assistant]

Please take a look at the requested changes, and use the Ready for review button when you are done, thanks 👍

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[cdnninja]

Typing added in a few key spots. I will keep adding if I run into other spots with it missing.

[allenporter]

Typing improvements look good, just one small suggestion.

Feedback was addressed