Add support for LIFAair air purifier

[pit3k]

Context

I have LIFAair air purifier that talks broadlink protocol. I've added support for it. It supports controlling the fan and reading it's various sensors: temperature, humidity, co2, TVOC, PM2.5. Product link: https://lifa-air.com/products/lifa-air-la330-air-purifier

Proposed change

Implement support for it and add a simple cli script that can be used to test this device.

Type of change

• [ ] Dependency upgrade
• [ ] Bugfix (non-breaking change which fixes an issue)
• [x] New device
• [ ] New product id (the device is already supported with a different id)
• [ ] New feature (which adds functionality to an existing device)
• [ ] Breaking change (fix/feature causing existing functionality to break)
• [ ] Code quality improvements to existing code or addition of tests
• [ ] Documentation

Additional information

• This PR fixes issue: fixes #
• This PR is related to:
• Link to documentation pull request:

Checklist

• [x] The code change is tested and works locally.
• [x] The code has been formatted using Black.
• [x] The code follows the Zen of Python.
• [x] I am creating the Pull Request against the correct branch.
• [x] Documentation added/updated.

[pit3k]

Is there any reason this pull request does not get approved? Anything I should change or improve?

I have added support for this device to home assistant but this pull request is a prerequisite.