installation: moved from `setup.py` to `pyproject.toml`: - following backend change, installation is now using `pyproject.toml`, and legacy `setup.py` as well as other legacy files have been deleted/updated. - [hatch](https://hatch.pypa.io) is now used as main building tool. However, thanks to the use of standards, other tools can be used too. - `VERSION` file has been deleted, in favor or using directly `__version__`, in `libervia/web/__init__.py`. Version can be updated directly from Hatch - update .hgignore - several dependencies version bump, with code update to adapt to changes.

syntax: glob
.build
build
ctags_links/
dist/
.eggs/
env/
MANIFEST
.mypy_cache/
*.orig
*.pyc
*.pyo
.pytest_cache
*.pyv
Session.vim
stubs/
*.swo
*.swp
tags
tests/e2e/report*
_trial_temp/
twistd.log
twistd.pid
twisted/plugins/dropin.cache
*.un~
.vim
.vscode