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.
You need sometime to be familar with it. It took me for a couple of weeks to use CubeMX and AC6 comfortablely. It would be helpful if you used Eclipse IDE before.