feat: open browser during serve with "--open"

src/cli/serve/mod.rs

@@ -68,7 +68,7 @@ impl Serve {
         Serve::regen_dev_page(&crate_config)?;
 
         // start the develop server
-        server::startup(self.serve.port, crate_config.clone()).await?;
+        server::startup(self.serve.port, crate_config.clone(), self.serve.open).await?;
 
         Ok(())
     }