feature: Added option to save and set default filters for libraries (#107)

Co-authored-by: PartyDonut <PartyDonut@users.noreply.github.com>

lib/util/item_base_model/item_base_model_extensions.dart

@@ -106,7 +106,7 @@ extension ItemBaseModelExtensions on ItemBaseModel {
         )
       else if (!exclude.contains(ItemActions.showAlbum) && galleryItem)
         ItemActionButton(
-          icon: Icon(FladderItemType.photoalbum.icon),
+          icon: Icon(FladderItemType.photoAlbum.icon),
           action: () => (this as PhotoModel).navigateToAlbum(context),
           label: Text(context.localized.showAlbum),
         ),

lib/util/map_bool_helper.dart

@@ -36,6 +36,7 @@ extension MapExtensions<T> on Map<T, bool> {
 
   bool get hasEnabled => values.any((element) => element == true);
 
+  //Replaces only keys that exist with the new values
   Map<T, bool> replaceMap(Map<T, bool> oldMap) {
     Map<T, bool> result = {};