Fix ALL the eslint warnings

[MindFreeze]

Proposed change

662 warnings. Fixed most. Ignored some that made sense.
Tested as much as I could but someone else should also try it out

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

[bramkragten]

Now we fixed all the warnings, should we make them errors so we keep it nice and clean? 🙃

[MindFreeze]

Now we fixed all the warnings, should we make them errors so we keep it nice and clean? 🙃

yep. I'll do another PR after this

[wendevlin]

Amazing