refactor: update cache storage initialization to use create_with method

[zoola969]

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[Copilot]

Pull Request Overview

This PR refactors the cache storage initialization approach by replacing lambda functions with a new create_with class method for TTLMapStorage and TTLMapAsyncStorage. This change improves code readability and provides a more consistent API pattern for storage configuration.

• Introduces create_with class methods that return callables for creating storage instances
• Updates all documentation and test files to use the new initialization pattern
• Maintains backward compatibility while offering a cleaner alternative to lambda-based initialization

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
cachium/storages/ttl_map.py	Adds create_with class methods to both storage classes for simplified instantiation
tests/test__decorator.py	Updates test cases to use new create_with method instead of lambda functions
docs/index.md	Updates documentation examples to demonstrate new initialization pattern
docs/guides/tutorials.md	Updates tutorial examples with new storage initialization approach
docs/guides/quickstart.md	Updates quickstart guide to use create_with method
docs/examples.md	Updates all code examples to use new storage initialization pattern
cachium/_decorators.py	Updates docstring example to show new initialization method
README.md	Refactors examples to use new pattern and improves async example clarity
todo	Minor addition of refactor task item

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