fix: Fix DeviceFeatures so that it can be serialized and deserialized properly

[allenporter]

Adds tests for the desired output, then update the algorithm to make the tests path (AI assisted).

This needs additional support because (1) the naming of variables for device features are more complex than other fields and (2) the typing of a dict of boolean fields is unique to DeviceFeatures.

This adds a few variations of tests for different forms of coverage from:

• Device features itself
• Test objects with similar behaviors
• Camelize/decamelize functions themselves

Required to fix home-assistant/core#157663

[Copilot]

Pull request overview

This PR fixes serialization and deserialization issues in the DeviceFeatures class by improving the naming convention handling for complex variable names. The fix addresses two specific challenges: (1) the complex naming patterns used in device feature variables (e.g., handling numbers and acronyms like "CES2022"), and (2) the unique typing of boolean field dictionaries in DeviceFeatures.

Key changes:

• Enhanced _decamelize function to properly handle numbers and acronyms in variable names
• Renamed is_ces2022_supported to is_ces_2022_supported for consistent naming
• Added comprehensive test coverage for serialization/deserialization of device features and similar structures

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/test_supported_features.py	Adds serialization/deserialization test for DeviceFeatures
tests/test_containers.py	Adds test for boolean features serialization and parametrized tests for camelize/decamelize functions
roborock/device_features.py	Renames field from is_ces2022_supported to is_ces_2022_supported
roborock/data/containers.py	Updates _decamelize function with improved regex patterns and adds class type checking
SUPPORTED_FEATURES.md	Updates documentation to reflect renamed field

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