Tools: Improve the Python package system

Introduce features into the Python package management system & manage
package versions outside of ESP-IDF repo.

export.fish

@@ -19,7 +19,7 @@ function __main
     eval "$idf_exports"
 
     echo "Checking if Python packages are up to date..."
-    python "$IDF_PATH"/tools/check_python_dependencies.py || return 1
+    python "$IDF_PATH"/tools/idf_tools.py check-python-dependencies || return 1
 
     # Allow calling some IDF python tools without specifying the full path
     # "$IDF_PATH"/tools is already added by 'idf_tools.py export'