Development tools for Zephyr on STM32Workbench for Zephyr: VS Code extension to set up, build, flash and debug Zephyr applications on STM32.Devicetree manager: browse, edit and visualize Zephyr devicetree, STM32CubeMX-like for Zephyr.
I just recognized, that current CubeMX (4.14.0) has -thanksfully- changed the directory-structure in a more flat way.
All my sugestions above are obsolete.