feat: open selected videos in new Terebi instances

TODO.md

@@ -1,6 +1,6 @@
 - [x] bulk category editing: when on a certain category view, add bulk category editing, such that all channels saved to that category are updated with the new categories set.
 - [ ] ui improvement: display the pinned status on category tab titles for pinned categories
-- [ ] start the terebi player as a new instance explicitly:
+- [x] start the terebi player as a new instance explicitly:
     ```sh
     terebi --new-instance
     terebi --new-instance "/path/to/video.mp4"

src/youtube.rs

@@ -460,7 +460,11 @@ impl PlayerLaunch {
             ));
         }
         let mut player = isolated_command(player)
-            .args(["--url", &format!("https://www.youtube.com/watch?v={id}")])
+            .args([
+                "--new-instance",
+                "--url",
+                &format!("https://www.youtube.com/watch?v={id}"),
+            ])
             .stdin(Stdio::null())
             .stdout(Stdio::null())
             .stderr(Stdio::piped())