Initial xiaomi_miio support for dmaker.airfresh.a1/t2017

[Kirmas]

Proposed change

This PR add two new device to xiaomi_miio integration dmaker.airfresh.a1 and dmaker.airfresh.t2017
This is initial PR I tried add as less new entities as i can due to this message. After this PR will be merged i`ll add more entities platform by platform.
FR: https://community.home-assistant.io/t/support-for-xiaomi-miio-support-for-dmaker-airfresh-t2017/235798

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:
• Link to documentation pull request: Add documentation for xiaomi_miio's dmaker.airfresh.{a1,t2017} support home-assistant.io#21538

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 user exposed functionality or configuration variables are added/changed:

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

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.
• For the updated dependencies - a link to the changelog, or at minimum a diff between library versions is added to the PR description.
• Untested files have been added to .coveragerc.

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To help with the load of incoming pull requests:

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

[Kirmas]

@MartinHjelmare is this more correct?

[MartinHjelmare]

Looks ok to me. A codeowner should review too.

[rytilahti]

I'm fine with this so let's merge it. Thanks for the PR @Kirmas!

@Kirmas as you have a better understanding of the integration and this type of devices, would you be up for some brainstorming to create a generic interface inside python-miio, and to start moving device specific parts (available features, available modes, ..) towards upstream?

[Kirmas]

@Kirmas as you have a better understanding of the integration and this type of devices, would you be up for some brainstorming to create a generic interface inside python-miio, and to start moving device specific parts (available features, available modes, ..) towards upstream?

I have added this to my personal TO-Do list. But It could be a lot of work (I must analyze other fan devices because looks like some things inside airfresh_t2017.py looks differently and could be standardize.). if you dont mind I`ll do this refactoring step after this integration will be finished.