This new VS Code plugin is an opportunity to improve support for all C++ projects. The option for generating main.cpp have been requested many times during the CubeMX and CubeIDE eras.
https://community.st.com/t5/stm32cubemx-mcus/there-is-a-plan-to-allow-stm32cubemx-for-generating-main-cpp/td-p/164264
