Add lifx.set_hev_cycle_state documentation

[Djelibeybi]

Proposed change

Add documentation for the new lifx.set_hev_cycle_state service.

Type of change

• Spelling, grammar or other readability improvements (current branch).
• Adjusted missing or incorrect information in the current documentation (current branch).
• Added documentation for a new integration I'm adding to Home Assistant (next branch).
  • I've opened up a PR to add logo's and icons in Brands repository.
• Added documentation for a new feature I'm adding to Home Assistant (next branch).
• Removed stale or deprecated documentation.

Additional information

• Link to parent pull request in the codebase: Add set_hev_cycle_state service to LIFX integration core#77546
• Link to parent pull request in the Brands repository:
• This PR fixes or closes issue: fixes #

Checklist

• This PR uses the correct branch, based on one of the following:
  • I made a change to the existing documentation and used the current branch.
  • I made a change that is related to an upcoming version of Home Assistant and used the next branch.
• The documentation follows the Home Assistant documentation standards.

[Djelibeybi]

@frenck the docs for the Clean Cycle binary sensor added in home-assistant/core#77535 are included here as I initially intended the sensor and service to merge in a single PR.

[frenck]

Thanks, @Djelibeybi 👍