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.
There has been an update recently for the dual bank devices STM32L0, STM32L1 and STM32F1 so you should update the software plugins first (v1.12.0).
With menu Help => Check For Updates.