Added effects to Yeelight bulbs #7152
This PR is now reopened, because there are now effects implemented in the
Any suggetions/improvements are welcome of course.
PR text before closing:
Related issue (if applicable): fixes #
Pull request in home-assistant.github.io with documentation (if applicable): home-assistant/home-assistant.github.io#<home-assistant.github.io PR number goes here>
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