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.
Have you managed to solve your problem ?
Is there a way to declare the option byte value in C code, in order that it will be flashed along with the program ?