ci(framework): Migrate pyproject.toml to use [project]

[danieljanes]

This PR migrates framework/pyproject.toml from [tool.poetry] to [project] and [dependency-groups] (PEP-621 and PEP-735)

[Copilot]

Pull request overview

Migrates Flower’s Poetry configuration to PEP 621-style [project] metadata and updates CI/docs/nightly tooling to align with the new pyproject structure.

Changes:

• Move package metadata and runtime dependencies from [tool.poetry] to [project] across framework/devtool (and the e2e strategies project).
• Update GitHub Actions and contributor docs to use python -m poetry ... and explicit dependency selection (--with dev, --only main, --all-extras).
• Replace brittle sed-based nightly metadata edits with a small Python helper (framework/dev/pyproject_meta.py).

Reviewed changes

Copilot reviewed 16 out of 16 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
framework/pyproject.toml	Converts framework package metadata/deps to [project], adds optional-deps and URLs, reorganizes dev requirements.
framework/e2e/strategies/pyproject.toml	Adds [project] metadata/dependencies for the strategies e2e Poetry project.
framework/docs/source/how-to-upgrade-to-flower-1.0.rst	Updates Poetry upgrade instructions to use python -m poetry install.
framework/docs/source/contributor-tutorial-get-started-as-a-contributor.rst	Updates dev install command to include the dev group.
framework/docs/source/contributor-how-to-write-documentation.rst	Updates doc build commands to python -m poetry run ....
framework/docs/source/contributor-how-to-set-up-a-virtual-env.rst	Updates virtualenv setup/activation instructions for Poetry.
framework/docs/source/contributor-how-to-install-development-versions.rst	Updates prerelease install instructions to python -m poetry install.
framework/dev/pyproject_meta.py	New helper to read/update [project] name/version.
framework/dev/publish-nightly.sh	Uses pyproject_meta.py instead of sed to set nightly name/version.
dev/pyproject.toml	Migrates devtool package metadata/deps to [project].
.github/workflows/framework-test.yml	Installs dependencies with --with dev --all-extras.
.github/workflows/framework-release-nightly.yml	Reads name/version via pyproject_meta.py instead of poetry version.
.github/workflows/framework-e2e.yml	Adjusts Poetry install usage (--with dev --all-extras, --only main).
.github/workflows/framework-docs.yml	Ensures docs job installs with the dev group.
.github/workflows/framework-docs-update-translations.yml	Uses Poetry dev group instead of extra pip install.
.github/workflows/framework-devtools.yml	Installs with the dev group for tool checks.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[chongshenng]

LGTM!

[tanertopal]

Lgtm!