This makes it so `zig build run` can take arguments such as `--config-default-files=false` or any other configuration. Previously, it only accepted commands such as `+version`. Incidentally, this also makes it so that the app in general can now take configuration arguments via the CLI if it is launched as a new instance via `open`. For example: open -n Ghostty.app --args --config-default-files=false This previously didn't work. This is kind of cool. To make this work, the libghostty C API was modified so that initialization requires the CLI args, and there is a new C API to try to execute an action if it was set.