Fix SmartThings Cover Set Position (for window shades)

[andrewsayre]

Proposed change

Restores the ability to set the cover position for SmartThings window shades.

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

SmartThings Edge Drivers now utilize the capability windowShadeLevel to represent the position of shades. As users are being migrated over to these new drivers, those that relied on the former switchLevel capability lost the ability in HA to set the position of their window shades. This PR adds support for the new capability while maintaining backward compabilility for switchLevel. Underlying library updates were required:

• pysmartthings: https://github.com/andrewsayre/pysmartthings/releases/tag/0.7.8
• pysmartapp: https://github.com/andrewsayre/pysmartapp/releases/tag/0.3.5

• This PR fixes or closes issue: fixes New Smartthings Edge Driver for Window Shades breaks Set Position for Cover in Home Assistant #88370
• Link to documentation pull request: Update SmartThings cover capabilities home-assistant.io#28218

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
• I have followed the perfect PR recommendations
• 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.

To help with the load of incoming pull requests:

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

[emontnemery]

LGTM, thanks @andrewsayre 👍

[emontnemery]

I realize this test is following the same pattern as the existing tests, but wouldn't it make sense to check the parameters of post_device_command also to check the correct command and correct parameters are used?

This can be done in a separate PR.

[andrewsayre]

Good call. I don't really like the leaky abstraction of digging into the guts of the library to mock, so will explore mocking the API actually used by HA in the future.