Forward selected path to caller

examples/dialog.rs

@@ -1,3 +1,11 @@
 fn main() -> Result<(), Box<dyn std::error::Error>> {
-    cosmic_files::dialog()
+    match cosmic_files::dialog()? {
+        Some(paths) => {
+            for path in paths {
+                println!("{}", path.display());
+            }
+        }
+        None => {}
+    }
+    Ok(())
 }