Added Light platform for GryfSmart

[karlowiczpl]

Breaking change

The Gryf Smart integration is truly an impressive solution. It is based on a distributed RS232 communication system with a local push architecture, ensuring the highest level of security. This setup provides an enormous gateway to the world for the Gryf Smart system, offering both reliability and scalability. It's an innovative approach that opens up a wealth of possibilities for seamless automation and control.

Proposed change

This pull request introduces a new integration called GryfSmart.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• [x ] 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

I have done only tests for config flow

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request: Gryfsmart.markdown home-assistant.io#37355 (review)
• Link to developer documentation pull request: Gryfsmart.markdown home-assistant.io#37355 (review)
• Link to frontend pull request: https://github.com/karlowiczpl/ha_gryf_smart_brands

Checklist

• [ x] The code change is tested and works locally.
• [ x] Local tests pass. Your PR cannot be merged unless tests pass
• [ x] There is no commented out code in this PR.
• [ x] I have followed the development checklist
• [ x] I have followed the perfect PR recommendations
• [ x] The code has been formatted using Ruff (ruff format homeassistant tests)
• [ x] Tests have been added to verify that the new code works.

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

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

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

• [ x] The manifest file has all fields filled out correctly.
  Updated and included derived files by running: python3 -m script.hassfest.
• [ x] New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
• [ x] For the updated dependencies - a link to the changelog, or at minimum a diff between library versions is added to the PR description.

To help with the load of incoming pull requests:

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

[home-assistant]

When adding new integrations, limit included platforms to a single platform. Please reduce this PR to a single platform

[home-assistant]

Please take a look at the requested changes, and use the Ready for review button when you are done, thanks 👍

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Stale

[zweckj]

Please wait with this PR until the base integration has been merged. Thanks!