chore: import upstream snapshot with attribution

dev/format_python_code.sh

@@ -0,0 +1,29 @@
+#! /bin/env bash
+
+set -e
+
+REPO_ROOT="$(dirname "$0")/.."
+PYTHON="${PYTHON:-python3}"
+BLACK="${PYTHON} -m black"
+ISORT="${PYTHON} -m isort"
+
+if ! ${BLACK} --version >/dev/null 2>&1; then
+    echo "black is not found, please check it is installed"
+    exit 1
+fi
+if ! ${ISORT} --version >/dev/null 2>&1; then
+    echo "isort is not found, please check it is installed"
+    exit 1
+fi
+
+cd -- "${REPO_ROOT}"
+${BLACK} .
+
+# isort is slow at skipping large Git-ignored directories when invoked as `isort .`,
+# so pass it an explicit list of files instead.
+
+# isort will only skip files listed in the config file corresponding to the first file
+# on the command line, which would normally be cvat-cli/pyproject.toml. Force the first
+# file to be manage.py, so that it uses `pyproject.toml` instead.
+git ls-files -z --exclude-standard --deduplicate --cached --others '*.py' \
+    | xargs -0 ${ISORT} --resolve-all-configs --filter-files manage.py