Use UV and Ruff

[mosquito]

This pull request migrates the project from Poetry to uv for Python package management and builds, updates CI workflows to use uv, and removes legacy configuration files and tools. It also refactors test setup to use a custom Docker-based RabbitMQ container management, improving reliability and flexibility for local and CI testing. The most important changes are grouped below:

Build system migration and configuration cleanup:

• Migrated from Poetry to uv for package management, builds, and publishing, updating pyproject.toml to use uv configuration and removing poetry.toml, pylama.ini, .coveragerc, and legacy Poetry-specific settings. [1] [2] [3] [4] [5]
• Updated Makefile commands to use uv for build, publish, test, and development instead of Poetry.

CI workflow modernization:

• Replaced Poetry-based steps in GitHub Actions workflows with uv equivalents, including package installation, linting (switching from pylama to ruff), and test execution. Updated checkout and setup-python actions to latest versions and improved RabbitMQ container setup in CI. [1] [2] [3] [4]
• Added a new workflow for publishing to PyPI using uv and the official PyPI publish action.

Testing and Docker container management improvements:

• Refactored tests/conftest.py to use a custom Docker client for RabbitMQ container lifecycle management, including robust cleanup with atexit and readiness probing. Supports both local and CI environments via AMQP_URL. [1] [2]
• Simplified and improved test fixtures for AMQP URLs, channel setup, and removed quick test skip marker. [1] [2]

Linting and coverage configuration updates:

• Added configuration for ruff linting and coverage in pyproject.toml, removing legacy pylama and coverage files. [1] [2] [3]

General cleanup:

• Removed unused or obsolete files (gray.conf, poetry.toml, pylama.ini, .coveragerc) and settings. [1] [2] [3] [4]

This migration streamlines development, testing, and CI/CD processes, and ensures compatibility with modern Python tooling.