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.
These two files (.project & .cproject) are hidden because they starts with dots
You can locate them using shell under : /........../STM32Cube_FW_F3_V1.4.0/Projects/STM32F303K8-Nucleo/Examples/TIM/TIM_PWMOutput/SW4STM32/STM32F303K8_NUCLEO