Added Stare persistence to Fakes

[eugeneniemand]

Breaking change

Proposed change

This is to persist the TurnOn and TurnOff states. I have logic that relies on current state, so when I turn something on I expect to be able to use State("some.entity") to get its state. It currenty returns null so I have now implemented Mocks to persist state

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New feature (which adds functionality to an existing integration)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the [development checklist][dev-checklist]
• The code compiles without warnings (code quality chek)
• Tests have been added to verify that the new code works.