Video player enhancements

• Based on lurkki's updates: https://github.com/Nheko-Reborn/nheko/pull/302
• Refactor code into reusable components
• Fix bugs as necessary and change some theming

resources/qml/delegates/PlayableMediaMessage.qml

@@ -48,6 +48,12 @@ Item {
         width: parent.width
         height: parent.height - fileInfoLabel.height
 
+        
+    TapHandler {
+        onTapped: mediaControls.showControls();
+    }
+
+
 
         Image {
             anchors.fill: parent