Add more Foscam switches

[Foscam-wangzhengyu]

Breaking change

Proposed change

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• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
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• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
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• This PR fixes or closes issue: fixes #
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[home-assistant]

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

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[edenhaus]

The PR is to big. We allow only adding one platform at the time.
Please split this PR into multiple:

• One is adding new switch entites
• One is adding the notify platform
• One is adding the number platform

[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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