Add ability to open files with system default application (#17231)

crates/gpui/src/platform/linux/platform.rs

@@ -351,6 +351,19 @@ impl<P: LinuxClient + 'static> Platform for P {
         self.reveal_path(path.to_owned());
     }
 
+    fn open_with_system(&self, path: &Path) {
+        let executor = self.background_executor().clone();
+        let path = path.to_owned();
+        executor
+            .spawn(async move {
+                let _ = std::process::Command::new("xdg-open")
+                    .arg(path)
+                    .spawn()
+                    .expect("Failed to open file with xdg-open");
+            })
+            .detach();
+    }
+
     fn on_quit(&self, callback: Box<dyn FnMut()>) {
         self.with_common(|common| {
             common.callbacks.quit = Some(callback);