[SD-7864] (config) Move to pyproject.toml, remove setup.py, setup.cfg and tox.ini

[elikaykova]

SD-7864

[sashawood]

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[Copilot]

Pull Request Overview

This PR migrates configuration from legacy files (setup.py, setup.cfg, tox.ini) into pyproject.toml and updates development environment dependencies and CI/CD configurations accordingly.

• Removed tox.ini, setup.py, and setup.cfg in favor of a centralized pyproject.toml configuration.
• Updated the tox configuration and developer dependencies (requirements-dev.txt) with newer package versions.
• Adjusted CI configurations in .travis.yml and the GitHub Actions tox runner workflow to use the new configuration file.

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tox.ini	Removed legacy tox configuration.
setup.py	Removed legacy setup script.
setup.cfg	Removed legacy configuration settings.
requirements-dev.txt	Updated tox and flake8 versions, added flake8-pyproject dependency.
pyproject.toml	Introduced as the new central configuration for the project.
.travis.yml	Updated install command to reference requirements-dev.txt.
.github/workflows/tox_runner.yml	Revised caching key to use new configuration files.

[Copilot]

Pull Request Overview

This PR migrates project configuration from legacy files (setup.py, setup.cfg, tox.ini) to a centralized pyproject.toml while updating some version information and dependency specifications. Key changes include:

• Removal of tox.ini, setup.py, and setup.cfg.
• Introduction of a new pyproject.toml containing build-system, project metadata, and tool-specific configurations.
• Updates to CI configurations (.travis.yml and GitHub workflows) as well as dependency updates in requirements-dev.txt.

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tox.ini	Removed legacy tox configuration
taskflow/init.py	Updated project version from 0.2.0 to 0.3.0
setup.py	Removed legacy package setup script
setup.cfg	Removed legacy package configuration
requirements-dev.txt	Updated dependency versions and added new linter dependency
pyproject.toml	Introduced new configuration for build-system, project metadata, and tox
README.md	Updated installation and development instructions
.travis.yml	Adjusted dependencies installation to use requirements-dev.txt
.github/workflows/tox_runner.yml	Updated caching keys and dependency installation commands for tox