feat: multiqueue implementation, support for custom settings for queues/exchange

[danfimov]

Fixes:

• Add RabbitMQ Quorum queues support #12
• multiple queues #16
• Add additional params to AioPikaBroker.init #24

Probably will be also be useful for #43 because we will be able to pass custom routing key.

[Copilot]

Pull request overview

This PR implements multi-queue support, allowing custom settings for queues and exchanges, and refactors the broker to use dedicated Queue and Exchange configuration objects instead of constructor parameters. Key changes include:

• Replaced multiple constructor parameters with Exchange and Queue configuration objects
• Added support for multiple task queues with custom routing
• Introduced new exception types for better error handling
• Enhanced testing with dedicated test files for routing and startup scenarios

Reviewed changes

Copilot reviewed 19 out of 20 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
taskiq_aio_pika/broker.py	Refactored to use Queue/Exchange objects, added multi-queue support, enhanced routing logic
taskiq_aio_pika/queue.py	New Queue dataclass for queue configuration
taskiq_aio_pika/exchange.py	New Exchange dataclass for exchange configuration
taskiq_aio_pika/exceptions.py	New exception types for broker errors
tests/test_startup.py	New tests for startup/declaration behavior
tests/test_routing.py	New tests for multi-queue routing scenarios
tests/test_delay.py	Extracted delay tests from test_broker.py
tests/test_delay_with_plugin.py	Extracted plugin delay tests from test_broker.py
tests/utils.py	Extracted common test utility function
tests/conftest.py	Updated fixtures to use new Queue/Exchange objects
examples/*.py	Added usage examples for new features
README.md	Updated documentation for new API
pyproject.toml	Updated dependencies and linting rules

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