Add option for unsafe formatting in tox

`tox -e format-unsafe` allows to format unsafe that fixes more linter
errors but might alter code logic.

tox.ini

@@ -67,17 +67,21 @@ commands =
     -i "{toxinidir}/docs/src/examples" \
     {[tox]lint_folders} "{toxinidir}/README.rst"
 
-[testenv:format]
-# Abuse tox to do actual formatting. Users can call `tox -e format` to run
-# formatting on all files
+[testenv:{format,format-unsafe}]
+description =
+  format: Formats files in working directory.
+  format-unsafe: Formats files in working directory. Fixes more linter errors
+                 but might alter code logic. Result of this formatting should
+                 be double checked.
 skip_install = true
 deps =
     ruff
     black
     blackdoc
     isort
 commands =
-    ruff check --fix {[tox]lint_folders}
+    format: ruff check --fix {[tox]lint_folders}
+    format-unsafe: ruff check --fix --unsafe-fixes {[tox]lint_folders}
     black {[tox]lint_folders}
     blackdoc {[tox]lint_folders}
     isort {[tox]lint_folders}