Initial support for HomeKit enabled televisions

[Jc2k]

Proposed change

This implements the most basic support for media_player entity type for homekit_controller. This is one of the more complicated HomeKit types so it deliberately starts small, additional features will be added by follow on pull requests. This only implements support for reading the current state (playing, paused, idle) and for the play, pause and stop service calls.

Type of change

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

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue: homekit_controller: unable to complete pair_setup with LG TV #25960
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist
• The code has been formatted using Black (black --fast homeassistant tests)
• Tests have been added to verify that the new code works.

If the code communicates with devices, web services, or third-party tools:

• The manifest file has all fields filled out correctly.
  Updated and included derived files by running: python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.

The integration reached or maintains the following Integration Quality Scale:

• No score or internal
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[dmulcahey]

I'll poke at this later tonight when I'm home to test it out. Thanks for adding this so quick!

[Jc2k]

@dmulcahey thanks! and no problem, had been putting off as no HK TV of my own, but knowing that another dev was available to help test was a big motivator :-)

[balloob]

Return None, let Home Assistant swap it out for STATE_UNKNOWN.

Suggested change

	return STATE_UNKNOWN
	return None

[balloob]

This looks great ! One tiny commemt, ok to merge afterwards