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.
It is a security feature in terminal (in both Mac and Linux) not for the password to be shown. not even *** for the number of chars typed. Just type your password and press Enter. The installation should continue.