[Storage] Added Support for UseDevelopmentStorage=true; for Connection String Client Constructors

[weirongw23-msft]

Edit: No tests needed for File Share, it's not a supported service. There's an existing test that already catches this!

Solves #42280

[Copilot]

Pull Request Overview

This PR adds support for the UseDevelopmentStorage=true; connection string format across Azure Storage client constructors, enabling developers to easily connect to local development storage emulators (like Azurite). The implementation follows the Azure Storage emulator's standard configuration by automatically configuring the appropriate endpoints, credentials, and protocol settings when this connection string format is detected.

Key Changes:

• Added connection string parsing logic to detect and handle UseDevelopmentStorage=true
• Implemented hardcoded development storage credentials and endpoints matching Azure Storage Emulator defaults
• Added comprehensive test coverage for the new development storage connection string feature

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
sdk/storage/azure-storage-blob/azure/storage/blob/_shared/base_client.py	Implements _parse_development_storage() function with emulator defaults and adds detection logic in parse_connection_str()
sdk/storage/azure-storage-blob/tests/test_blob_client.py	Adds test case validating development storage connection string parsing and client initialization

[weirongw23-msft]

The current failures are due to a circular import error. It is likely the case that we cannot put these constants in constants.py and then use them in parser.py. Will try refactoring out the constants...