Pre import image_upload to avoid loading it after asyncio has started

[bdraco]

Proposed change

image_upload will always be setup because its a dep of person and since person is a dep of onboarding which is a dep of frontend its already a base requirement for homeassistant.

Pillow is now listed as a requirement for homeassistant so we can be sure it installed by the time bootstrap is loaded

image_upload loading is currently a bottleneck to
get the frontend loaded because it has to load in the import executor when everything is busy early in startup

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 #
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