add twinkly select mode

[sVnsation]

Breaking change

Proposed change

Added a mode selector to the Twinkly integration that allows controlling the device mode through a select entity.

• color
• demo
• effect
• movie
• off
• playlist
• rt

The implementation:

• Uses TwinklyCoordinator for state management
• Adds a new select entity for mode control

Just like suggested from @frenck in this #83023 (comment)

Type of change

• New feature (which adds functionality to an existing integration)

Additional information

• This PR fixes or closes issue: fixes Twinkly integration disabling playlist on state change #73336

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
• I have followed the perfect PR recommendations
• The code has been formatted using Ruff (ruff format homeassistant tests)
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

To help with the load of incoming pull requests:

• I have reviewed two other open pull requests in this repository.

[home-assistant]

Hey there @dr1rrb, @RobBie1221, @Olen, mind taking a look at this pull request as it has been labeled with an integration (twinkly) you are listed as a code owner for? Thanks!

Code owner commands

Code owners of twinkly can trigger bot actions by commenting:

• @home-assistant close Closes the pull request.
• @home-assistant rename Awesome new title Renames the pull request.
• @home-assistant reopen Reopen the pull request.
• @home-assistant unassign twinkly Removes the current integration label and assignees on the pull request, add the integration domain after the command.
• @home-assistant add-label needs-more-information Add a label (needs-more-information, problem in dependency, problem in custom component) to the pull request.
• @home-assistant remove-label needs-more-information Remove a label (needs-more-information, problem in dependency, problem in custom component) on the pull request.