Add bond cover assumed state and local polling

[prystupa]

Proposed change

Informing HA that Bond integration covers have assumed state tracked by Bond hub, implement polling for state

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
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• This PR fixes or closes issue: fixes #
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• The code change is tested and works locally.
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  Updated and included derived files by running: python3 -m script.hassfest.
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[MartinHjelmare]

Thanks!

[elupus]

Wait.. If you can fetch state from hub, and that is a valid state. Assumed state should not be set to true.

[prystupa]

Wait.. If you can fetch state from hub, and that is a valid state. Assumed state should not be set to true.

State inside the Hub is assumed. Bond does not know if you use your remote directly. So if we don't declare assumed, then user can get in trouble, when state would not match, but you disables choices