Enhance CoverDevice with automatic command type detection

[jasonacox]

This pull request adds automatic detection of the command type used by CoverDevice ("open"/"close" vs "on"/"off"), improving compatibility with different device models and reducing the need for manual configuration. It includes a manual override method, updates documentation and examples, and bumps the project version.

CoverDevice command detection and configuration:

• Added lazy detection in CoverDevice to automatically determine whether to use "open"/"close" or "on"/"off" commands by checking device status on the first use, defaulting to "on"/"off" for backward compatibility (tinytuya/CoverDevice.py).
• Includes set_cover_command_type(use_open_close=True) method to allow manual override of the detected command type (tinytuya/CoverDevice.py).

Documentation and examples:

• Updated function signatures and notes in both the code and README.md to document the new command detection behavior and manual override method (tinytuya/CoverDevice.py, README.md). [1] [2]
• Added a new example in the README.md demonstrating how to use CoverDevice with both automatic detection and manual override (README.md).

Closes #653

[Copilot]

Pull Request Overview

This pull request enhances the CoverDevice class by adding automatic detection of command types, allowing it to work with devices that use either "open"/"close" or "on"/"off" commands without manual configuration.

• Added lazy command type detection that checks device status on first use
• Implemented manual override method set_cover_command_type() for explicit control
• Updated documentation and added usage examples

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
tinytuya/core/core.py	Version bump from 1.17.4 to 1.17.5
tinytuya/CoverDevice.py	Added command detection logic, manual override method, and updated function signatures
RELEASE.md	Added release notes for v1.17.5 describing the new CoverDevice features
README.md	Updated CoverDevice documentation and added comprehensive usage examples

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