Adds a root-level `build.sh` for configuring and building Nebula Browser with CMake on macOS, including clean and configure-only modes. Also removes an unused `Trim` helper from the extension manager.
Adds a root-level `build.sh` for configuring and building Nebula Browser with CMake on macOS, including clean and configure-only modes. Also removes an unused `Trim` helper from the extension manager.