Fix bridge-led support in limitlessled.py

[quadportnick]

Addressing #6382 . Feedback from github & forums is the bridge_led feature never worked and defining the bridge LED as another group+bulb type is the right way to do this in the limitlessled component.

Description:

Removes bridge_led configuration and adds bridge-led as a type parameter

Related issue (if applicable): fixes #6382

Pull request in home-assistant.github.io with documentation (if applicable): home-assistant/home-assistant.io#2329

Example entry for configuration.yaml (if applicable):

Checklist:

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

• Documentation added/updated in home-assistant.github.io

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

• Local tests with tox run successfully. Your PR cannot be merged unless tests pass

N/A:

• New dependencies have been added to the REQUIREMENTS variable (example).
• New dependencies are only imported inside functions that use them (example).
• New dependencies have been added to requirements_all.txt by running script/gen_requirements_all.py.
• New files were added to .coveragerc.

[mention-bot]

@quadportnick, thanks for your PR! By analyzing the history of the files in this pull request, we identified @fabaff, @soldag and @happyleavesaoc to be potential reviewers.

[homeassistant]

Hi @quadportnick,

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Once you do that we will be able to review and accept this pull request.

Thanks!