remove pyproject.toml, add ruff.toml (#9929)

ruff.toml

@@ -0,0 +1,43 @@
+# Same as Black.
+line-length = 120
+
+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",
+    #  Not for the dojo specific stuff
+    "dojo/db_migrations"
+]
+
+[lint]
+# Enable the pycodestyle (`E`) and Pyflakes (`F`) rules by default.
+# Unlike Flake8, Ruff doesn't enable pycodestyle warnings (`W`) or
+# McCabe complexity (`C901`) by default.
+select = ["E", "F", "FLY", "TRY004", "TRY2"]
+ignore = ["E501", "E722", "F821"]
+
+# Allow autofix for all enabled rules (when `--fix`) is provided.
+fixable = ["ALL"]
+unfixable = []
+
+preview = true
+
+per-file-ignores = {}