Create base class for Rachio smart hose timer entities

[brg468]

Proposed change

Create a base class for smart hose timer entities. Will be used further for adding binary sensor(s) in a future PR.

Also remove connections from device info. This was problematic when multiple timers are connected to a single base station, because they share the MAC of the base station but should be treated as separate devices.

Updates entity naming for the switch.

Type of change

• 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)
• Code quality improvements to existing code or addition of tests

Additional information

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

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

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[bdraco]

Thanks @brg468