VLCEditController: Cosmetic: Add marks

Sources/VLCEditController.swift

@@ -95,6 +95,8 @@ private extension VLCEditController {
     }
 }
 
+// MARK: - VLCEditControllerDataSource
+
 extension VLCEditController: VLCEditControllerDataSource {
     func toolbarNeedsUpdate(editing: Bool) {
 //        editToolbar.isHidden = !editing
@@ -105,6 +107,8 @@ extension VLCEditController: VLCEditControllerDataSource {
     }
 }
 
+// MARK: - VLCEditToolbarDelegate
+
 extension VLCEditController: VLCEditToolbarDelegate {
     func createPlaylist() {
         if let model = category as? PlaylistModel {
@@ -179,6 +183,8 @@ extension VLCEditController: VLCEditToolbarDelegate {
     }
 }
 
+// MARK: - UICollectionViewDataSource
+
 extension VLCEditController: UICollectionViewDataSource {
     func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
         return category.anyfiles.count
@@ -198,6 +204,8 @@ extension VLCEditController: UICollectionViewDataSource {
     }
 }
 
+// MARK: - UICollectionViewDelegate
+
 extension VLCEditController: UICollectionViewDelegate {
     func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
         if let cell = collectionView.cellForItem(at: indexPath) as? VLCMediaViewEditCell {
@@ -212,6 +220,8 @@ extension VLCEditController: UICollectionViewDelegate {
     }
 }
 
+// MARK: - UICollectionViewDelegateFlowLayout
+
 extension VLCEditController: UICollectionViewDelegateFlowLayout {
     func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
         let contentInset = collectionView.contentInset