Implement basic UI setup

[l7ssha]

Proposed change

Allow configuration from UI, while allowing existing and new configuration from .yaml files.

Type of change

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

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• The code has been formatted using Black (black --fast custom_components)

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated to README.md

[coveralls]

Pull Request Test Coverage Report for Build 12935089135

Details

• 48 of 58 (82.76%) changed or added relevant lines in 3 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-4.0%) to 91.045%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
custom_components/apparent_temperature/init.py	6	10	60.0%
custom_components/apparent_temperature/sensor.py	31	37	83.78%

Totals
Change from base Build 12112297830:	-4.0%
Covered Lines:	183
Relevant Lines:	201

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💛 - Coveralls