Add iframe strategy

[piitaya]

Proposed change

Add iframe strategy to replace the iframe panel.

Create a dashboard dialog

Iframe dashboard

UI editor

YAML editor

Type of change

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

Example configuration

Additional information

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

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• 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

[raulgbcr]

Is there any chance that we can configure HA iframes to have the "allow" tag included? Maybe as an advance setting?
This is useful for enabling autoplay and other behaviors on iframes

https://developer.mozilla.org/en-US/docs/Web/HTML/Element/iframe#allow

[frenck]

@raulgbcr This is not the place for feature requests. Please use our community forums for those.

Thanks 👍

../Frenck