Refactor eafm to avoid creating entities in the coordinator update

[bdraco]

Proposed change

Refactor eafm to avoid creating entities in the coordinator update. Creating the entities inside the coordinator relies on the add entities call happening after the coordinator finishes and sets data. We should not create entities inside the coordinator update path as there is no guarantee that the coordinator data is set before its returned

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)
• 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 @Jc2k, mind taking a look at this pull request as it has been labeled with an integration (eafm) you are listed as a code owner for? Thanks!

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[Jc2k]

Cheers!

[bdraco]

thanks