feat: Simplify device manager creation

[allenporter]

Remove the need to pass in a home data api by taking all information up
front to create the roborock web API in the device manager creation
interface.

This creates a new Web Api wrapper that will also be used for getting
routine information in a followup PR, which was the initial motivation behind this change.

Overall this will allow additional code simplification in callers when
onboarding the new API, completely removing the need to continue using the Web API directly for devices.

[Copilot]

Pull Request Overview

This PR simplifies device manager creation by consolidating authentication parameters into a UserParams dataclass and creating a new UserWebApiClient wrapper. This removes the need for callers to directly instantiate and manage the home data API, streamlining the initialization flow.

Key Changes:

• Introduced UserParams dataclass to encapsulate username, user data, and optional base URL
• Created UserWebApiClient wrapper class to bind API client with user context
• Replaced create_home_data_api function with internal _create_web_api_wrapper function

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
roborock/web_api.py	Added UserWebApiClient wrapper class to bind API client with user authentication context
roborock/devices/device_manager.py	Replaced home data API callable pattern with UserWebApiClient, introduced UserParams dataclass, and updated create_device_manager to accept UserParams
roborock/cli.py	Updated to use new UserParams interface instead of calling create_home_data_api
tests/devices/test_device_manager.py	Refactored tests to use fixtures for mocking home data and updated to work with new UserParams interface

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.