Confirm when resetting hassio optoins

[balloob]

Breaking change

Proposed change

Confirm when resetting hass.io add-on options to default.

I've updated the confirm dialog API to return a promise that resolves into true/false. That way it's a lot easier to use than passing cancel/confirm. The confirm API also felt weird, it has an optional out parameter? That seems like we merged a little too many types. Better keep them separate. I've simplified it a bit now, I think that we should aim to get rid of all cancel and confirm options in the codebase and then just pass a resolve (from Promise) to the dialog box to collect the result with null indicating a cancel.

Fixes #3854
Fixes #4393

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