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.
Attached is an explanation related to project layout on disk and System Workbench project. Also the complete tree view of project directory. (project from scratch)
Hope to be usefull. Let me know if you have any questions.