Add faucet, shower, sprinkler, valve to HomeKit

[cdce8p]

Description:

I've added the long requested switch types: faucet, shower, sprinkler and valve.

Pull request in home-assistant.io with documentation (if applicable): home-assistant/home-assistant.io#6515

Example entry for configuration.yaml (if applicable):

homekit:
  entity_config:
    switch.my_faucet:
      type: faucet
    switch.my_shower:
      type: shower
    switch.my_sprinkler:
      type: sprinkler
    switch.my_valve:
      type: valve

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass
• Documentation added/updated in home-assistant.io
• Tests have been added to verify that the new code works.