Add Xiaomi Aqara Config Flow

[starkillerOG]

Breaking change

YAML configuration of the xiaomi_aqara component has been deprecated, please remove the xiaomi_aqara platform from your configuration.yaml file.

The xiaomi_aqara component now uses the new Config Flow.
Xiaomi Aqara Gateways schould be discovered automatically and show up under "Configuration"-> "Integrations", from there hit configure and go through the steps.
If your Xiaomi Aqara Gateway does not show up automatically, go to "Configuration"-> "Integrations"-> press the "+" icon -> search for "xiaomi_aqara" and enter the setup.

If no key is provided during setup, only the binary_sensor and sensor platforms will be available. A key is required to activate the other platforms.

Proposed change

• Implement Config Flow
• Implement the zeroconf discovery using Config Flow
• Set device_ids and add device information
• Removed the depricated discovery implementation.

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

Example entry for configuration.yaml:

Config Flow :)

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request: Docs Xiaomi Aqara Config Flow home-assistant.io#13453

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.
• Untested files have been added to .coveragerc.

The integration reached or maintains the following Integration Quality Scale:

• No score or internal
• 🥈 Silver
• 🥇 Gold
• 🏆 Platinum

[starkillerOG]

To Do:

• add config flow tests
• add documentation
• update .coveragerc
• add async_unload_entry

[starkillerOG]

@Danielhiversen I am not sure if the XiaomiGateway class of the pyxiaomigateway library does I/O?
If so, how can I schedule the initialization of the class in the executor pool?
The normal hass.async_add_executor_job will give me an error that XiaomiGateway is not callable since it is a class and not a function...

[MartinHjelmare]

gateway_instance = await hass.async_add_executor_job(
    gateway_class, param1, param2
)

[starkillerOG]

@MartinHjelmare this lint test failure is totally unrelated:
tests/components/arcam_fmj/test_device_trigger.py:52:26: F541 f-string is missing placeholders
Think this is something wrong in the dev branch or something.

Could you restart the tests?

[MartinHjelmare]

Please rebase on latest dev branch to let the build pass.

[starkillerOG]

@MartinHjelmare I have fully tested this.
I think it is now ready to be merged.
Only thing left is the unique_id (mac or sid), see the discussion about pros/cons...

[starkillerOG]

I think the failed tests are unrelated to this PR, could you confirm @MartinHjelmare

[starkillerOG]

@MartinHjelmare any more feedback?

[starkillerOG]

@MartinHjelmare can you now approve?

[starkillerOG]

@MartinHjelmare tested the code again, and everything seems to work.
I think this is ready for merging.

[MartinHjelmare]

Good!

[MartinHjelmare]

Please update the breaking change paragraph and mention that if no key is set only the binary_sensor and sensor platforms will be loaded. A key is required to activate the other platforms.

[starkillerOG]

@MartinHjelmare I added it to the breaking change