Improve timingView with display of the ASS lines

Display the Ass lines on the timingView.

Allow for Drag & Drop of bars to change syl duration / line start and end time of the AssLineModels only (as changes are not written back to the Ass file yet).

src/UI/DocumentViews/AudioVisualizer/TimingScene.cc

@@ -30,8 +30,8 @@ using namespace Vivy;
 //{
 //}
 
-TimingScene::TimingScene(QImage img_, AudioContext::StreamPtr stream,
-                         VivyDocumentView& rootView, QWidget *parent) noexcept
+TimingScene::TimingScene(QImage img_, AudioContext::StreamPtr stream, VivyDocumentView &rootView,
+                         QWidget *parent) noexcept
     : QGraphicsScene(parent)
     , AbstractVivyDocumentNeeder(rootView)
     , img(img_)
@@ -90,8 +90,7 @@ TimingScene::rebuildScene()
                 addItem(l);
                 timingLines.append(l);
                 if (auto assLinesModel = rootVivyDocumentView.getAssLinesModel()) {
-                    connect(l, &TimingLine::lineChanged, assLinesModel,
-                            &AssLinesModel::updateLine);
+                    connect(l, &TimingLine::lineChanged, assLinesModel, &AssLinesModel::updateLine);
                 }
             }
         }