DX: define developer environment with uv

[redeboer]

• Closes Speed up Binder builds by limiting dependencies policy#64
• Closes Speed up creation of developer environment policy#333
• Closes Clean up tox configuration with base key policy#408

### Tasks
- [x] Share `passenv` through `testenv`
- [x] Remove `FORCE_COLOR`
- [x] Set `PYTHONWARNINGS=` in `doc` job (if needed)
- [x] Write CLI flags in full, with quotation marks, and with `=` sign
- [x] Use `--ignore` instead of `--re-ignore` in `sphinx-autobuild`
- [x] Set random port for [`sphinx-autobuild`](https://pypi.org/project/sphinx-autobuild) (`--port=0`)
- [x] Check descriptions with `tox list`
- [x] Improve main `tox run`, i.e. reconsider the `envlist` under `[tox]`
- [x] Group `doc` jobs for `tox list` (i.e. `docnb` right after `doc` and `docnblive` right after `doclive`)
- [x] List `.virtual_documents` and `.ipynb_checkpoints` under `--re-ignore`

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