Pick track with highest quality

[KatrinIhler]

As far as I can tell, the Annotation Tool still selects the first track of each flavor regardless of quality. I thought I had patched that, but it turns out I only did that for the SWITCH fork that used the External API. But it shouldn't be too hard to introduce that here as well... My code snippet:

                          .thenComparingLong(entry -> {
                            Long width = (Long) entry.getValue().get("width");
                            Long height = (Long) entry.getValue().get("height");
                            if (height != null && width != null) {
                             return width * height;
                            }
                            return 0;
                          })