feat: mark browsed files with their download status

Queueing a file or folder from a user's browse tree left no trace in
the window it was queued from. A row whose download is in the transfer
list now carries the same status glyph the Downloads pane uses —
⋯ queued, ↯ active, ⏸ paused, ✓ done — and an active row shows its
percent beside the size. Folders mark through their files: queue a
folder and watch the ✓ spread down it.

soulseek-rs/src/ui/main_tui/render.rs

@@ -419,6 +419,7 @@ impl MainTui {
                 &self.state.browse,
                 &mut self.state.browse_table_state,
                 self.spinner_state,
+                &self.state.downloads,
             );
         }