Split out HTML imports from entrypoint

[balloob]

Breaking change

Proposed change

Part of #6028

This will no longer include the HTML import in the main entry point. It will load as soon as the main entry point has loaded. Still taking up memory but no longer delaying initial startup that much.

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:
• 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

[balloob]

Someone sorted the imports at some point. The polyfill was meant to be the first import here hence the comment/eslint disable 😆

[bramkragten]

Wasn't me... 🙈 it was Organize imports