Move ruff config to its own file

Author: ulgens

pyproject.toml

@@ -4,10 +4,3 @@ build-backend = "setuptools.build_meta"
 
 [tool.pytest.ini_options]
 addopts = " --ignore django_prometheus/tests/end2end"
-
-[tool.ruff]
-line-length = 120
-target-version = "py39"
-
-[tool.ruff.lint]
-select = ["B", "C4", "E", "F", "I", "T10", "YTT", "W"]

ruff.toml

@@ -0,0 +1,30 @@
+line-length = 120
+target-version = "py39"
+
+[lint]
+select = [
+    # https://docs.astral.sh/ruff/rules/#flake8-bugbear-b
+    # https://github.com/PyCQA/flake8-bugbear
+    "B",
+    # https://docs.astral.sh/ruff/rules/#flake8-comprehensions-c4
+    # https://github.com/adamchainz/flake8-comprehensions
+    "C4",
+    # https://docs.astral.sh/ruff/rules/#error-e
+    # https://github.com/PyCQA/pycodestyle
+    "E",
+    # https://docs.astral.sh/ruff/rules/#pyflakes-f
+    # https://github.com/PyCQA/pyflakes
+    "F",
+    # https://docs.astral.sh/ruff/rules/#isort-i
+    # https://pycqa.github.io/isort/
+    "I",
+    # https://docs.astral.sh/ruff/rules/#flake8-debugger-t10
+    # https://github.com/jbkahn/flake8-debugger
+    "T10",
+    # https://docs.astral.sh/ruff/rules/#flake8-2020-ytt
+    # https://github.com/asottile-archive/flake8-2020
+    "YTT",
+    # https://docs.astral.sh/ruff/rules/#warning-w
+    # https://github.com/PyCQA/pycodestyle
+    "W",
+]