chore: import upstream snapshot with attribution

tools/detect_python.sh

@@ -0,0 +1,30 @@
+# This file should be sourced, not executed!
+#
+# This is a helper script for detecting Python executables in the PATH. It is intended to be used for determining
+# which Python should be used with idf_tools.py for installing tools and exporting environment variables.
+#
+# 1. The script is looking for python version same or greater than minimal required version on path
+# 2. If required version of python is found it is assigned to environmental variable `ESP_PYTHON`
+# 3. If required version of python is not found, script will fail
+
+OLDEST_PYTHON_SUPPORTED_MAJOR=3
+OLDEST_PYTHON_SUPPORTED_MINOR=10
+
+ESP_PYTHON=python
+
+for p_cmd in python3 python python3.10 python3.11 python3.12 python3.13; do
+    $p_cmd --version >/dev/null 2>&1 || continue
+    echo "Checking \"$p_cmd\" ..."
+
+    $p_cmd -c "import sys; exit(1) if sys.version_info.major < int(\"$OLDEST_PYTHON_SUPPORTED_MAJOR\") else exit(0);" || continue
+    $p_cmd -c "import sys; exit(1) if sys.version_info.minor < int(\"$OLDEST_PYTHON_SUPPORTED_MINOR\") else exit(0);" || continue
+
+    ESP_PYTHON=$p_cmd
+    break
+done
+
+$ESP_PYTHON --version 2>/dev/null || {
+    echo "Python ${OLDEST_PYTHON_SUPPORTED_MAJOR}.${OLDEST_PYTHON_SUPPORTED_MINOR}+ is not installed! Please see the documentation for how to install it."
+    exit 1
+}
+echo "\"$ESP_PYTHON\" has been detected"