Containing Group/Sub-Group relationships (#5105)

* Add UI support for setting containing groups
* Show containing groups in group details panel
* Move tag hierarchical filter code into separate type
* Add depth to scene_count and add sub_group_count
* Add sub-groups tab to groups page
* Add containing groups to edit groups dialog
* Show containing group description in sub-group view
* Show group scene number in group scenes view
* Add ability to drag move grid cards
* Add sub group order option
* Add reorder sub-groups interface
* Separate page size selector component
* Add interfaces to add and remove sub-groups to a group
* Separate MultiSet components
* Allow setting description while setting containing groups

pkg/sliceutil/collections.go

@@ -146,7 +146,7 @@ func Filter[T any](vs []T, f func(T) bool) []T {
 	return ret
 }
 
-// Filter returns the result of applying f to each element of the vs slice.
+// Map returns the result of applying f to each element of the vs slice.
 func Map[T any, V any](vs []T, f func(T) V) []V {
 	ret := make([]V, len(vs))
 	for i, v := range vs {