Add ruff config

{{cookiecutter.project_slug}}/pyproject.toml

@@ -8,3 +8,30 @@ filter_files = true
 line-length = 120
 skip-string-normalization = true
 exclude = "(^/\\.git|^/env/|^/venv/|^/node_modules/)"
+
+[tool.ruff]
+line-length = 120
+# Exclude a variety of commonly ignored directories.
+exclude = [
+    ".bzr",
+    ".direnv",
+    ".eggs",
+    ".git",
+    ".git-rewrite",
+    ".hg",
+    ".mypy_cache",
+    ".nox",
+    ".pants.d",
+    ".pytype",
+    ".ruff_cache",
+    ".svn",
+    ".tox",
+    ".venv",
+    "__pypackages__",
+    "_build",
+    "buck-out",
+    "build",
+    "dist",
+    "node_modules",
+    "venv",
+]