feat: Get iced-video working

gst/src/bus.rs

@@ -17,4 +17,11 @@ impl Bus {
     pub fn stream(&self) -> gstreamer::bus::BusStream {
         self.inner.stream()
     }
+
+    pub fn filtered_stream<'a>(
+        &self,
+        msg_types: &'a [gstreamer::MessageType],
+    ) -> impl futures::stream::FusedStream<Item = gstreamer::Message> + Unpin + Send + 'a {
+        self.inner.stream_filtered(msg_types)
+    }
 }