Add ELV-SH-SB8 Status Board switch support to homematicip_cloud

[lackas]

Proposed change

Add switch entity support for the ELV-SH-SB8 Status Board device. This device has 8 SWITCH_CHANNEL outputs that control LEDs for visual status indication.

The device uses the same channel structure as the existing OpenCollector8Module (HMIP-MOD-OC8), so it is added to the existing multi-switch isinstance check.

Note: This PR depends on homematicip-rest-api PR hahn-th/homematicip-rest-api#622 being merged first.

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)
• Deprecation (breaking change to happen in the future)
• 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: Status-Board ELV-SH-SB8, powered by Homematic IP hahn-th/homematicip-rest-api#603
• Link to documentation pull request:
• Link to developer documentation pull request:
• Link to frontend pull request:

Checklist

• I understand the code I am submitting and can explain how it works.
• The code change is tested and works locally.
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• There is no commented out code in this PR.
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• The code has been formatted using Ruff (ruff format homeassistant tests)
• Tests have been added to verify that the new code works.
• Any generated code has been carefully reviewed for correctness and compliance with project standards.

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

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

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  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.
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[home-assistant]

Hey there @hahn-th, mind taking a look at this pull request as it has been labeled with an integration (homematicip_cloud) you are listed as a code owner for? Thanks!

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