Add ruff format config.

antsibull-nox.toml

@@ -24,6 +24,8 @@ run_isort = false
 run_black = false
 run_ruff_check = true
 ruff_check_config = "ruff.toml"
+run_ruff_format = true
+ruff_format_config = "ruff.toml"
 run_flake8 = false
 run_pylint = false
 run_yamllint = true