Support device as predefined slot list

[tetele]

Breaking change

NO

Proposed change

Add {device} as a pre-filled slot for intent recognition, populated with device names in order to allow queries concerning entities that belongs to a named device.

Here is a couple of custom sentences that could work with this feature:

language: "en"
intents:
  HassGetState:
    data:
      - sentences:
        - "what is the {device_class} of {device}"
        slots:
          domain: "sensor"
      - sentences:
        - "what is the {domain} of {device}"

lists:
  device_class:
    values:
      - "temperature"
      - "battery"
  domain:
    values:
      - in: "home state"
        out: "device_tracker"

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

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request:

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
• I have followed the perfect PR recommendations
• The code has been formatted using Black (black --fast homeassistant tests)
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• The manifest file has all fields filled out correctly.
  Updated and included derived files by running: python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
• For the updated dependencies - a link to the changelog, or at minimum a diff between library versions is added to the PR description.
• Untested files have been added to .coveragerc.

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• I have reviewed two other open pull requests in this repository.

[home-assistant]

Hey there @home-assistant/core, @synesthesiam, mind taking a look at this pull request as it has been labeled with an integration (intent) you are listed as a code owner for? Thanks!

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[home-assistant]

Hey there @home-assistant/core, @synesthesiam, mind taking a look at this pull request as it has been labeled with an integration (conversation) you are listed as a code owner for? Thanks!

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Code owners of conversation can trigger bot actions by commenting:

• @home-assistant close Closes the pull request.
• @home-assistant rename Awesome new title Renames the pull request.
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[tetele]

Leaving the code coverage for a bit. Will fix if the rest of the PR is ok.

[github-actions]

There hasn't been any activity on this pull request recently. This pull request has been automatically marked as stale because of that and will be closed if no further activity occurs within 7 days.
If you are the author of this PR, please leave a comment if you want to keep it open. Also, please rebase your PR onto the latest dev branch to ensure that it's up to date with the latest changes.
Thank you for your contribution!

[tetele]

Not yet stale

[tetele]

Breaking up into smaller PRs