add platform specific functions for launching apps for workspaces

examples/file_explorer.rs

@@ -14,7 +14,7 @@ use dioxus_desktop::{Config, WindowBuilder};
 fn main() {
     LaunchBuilder::new(app)
         .cfg(Config::new().with_window(WindowBuilder::new().with_resizable(true)))
-        .launch()
+        .launch_desktop()
 }
 
 const _STYLE: &str = manganis::mg!(file("./examples/assets/fileexplorer.css"));