Zephyr Workbench, a VSCode extension to manage Zephyr on STM32.
It enables users to easily create, develop, and debug Zephyr applications.
Main features:
Install host dependencies.
Import toolchain and SDK.
Create, configure, build and manage apps.
Debug STM32.
You can directly download it from the VSCode marketplace
For more details, visit the Zephyr Workbench
The advice from jLn_38 and ncertad worked for me on macOS High Sierra 10.13.6 (is there a way to give points/upvote?), although be aware that the installation may freeze at step two when it is waiting for a password in the terminal, but it’s not obvious why it has stopped.