feat: add luxafor support

[coveralls]

Pull Request Test Coverage Report for Build 649889257

• 32 of 39 (82.05%) changed or added relevant lines in 4 files are covered.
• 155 unchanged lines in 13 files lost coverage.
• Overall coverage decreased (-8.7%) to 48.088%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
chroma_feedback/consumer/luxafor/core.py	7	14	50.0%
<!--	Total:	32	39	82.05%	-->

Files with Coverage Reduction	New Missed Lines	%
chroma_feedback/producer/appveyor/normalize.py	6	30.77%
chroma_feedback/producer/circle/normalize.py	6	30.77%
chroma_feedback/producer/codeship/normalize.py	6	30.77%
chroma_feedback/producer/gitlab/normalize.py	6	30.77%
chroma_feedback/producer/travis/normalize.py	6	30.77%
chroma_feedback/producer/wercker/normalize.py	7	28.57%
chroma_feedback/producer/appveyor/core.py	10	40.0%
chroma_feedback/producer/core.py	10	30.0%
chroma_feedback/producer/wercker/core.py	15	36.84%
chroma_feedback/producer/gitlab/core.py	16	35.9%
<!--	Total:	155		-->

Totals
Change from base Build 649200960:	-8.7%
Covered Lines:	805
Relevant Lines:	1674

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💛 - Coveralls