improve: introduce isort for linting Python imports (#1983)

dev/reformat

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+set -x
+
+# python style checks rely on `isort` in path
+if ! command -v isort &> /dev/null
+then
+    echo "Skip Python imports linting, since 'isort' is not available. Please install it with 'pip install isort'."
+else
+    isort  --settings ./.github/linters/.isort.cfg ./
+fi