Manual task reordering feature (#6)

This PR contains the work done to add support for manual todo task reordering in the *Task list* view

Reviewed-on: rock-n-code/todos-app#6
Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Co-committed-by: Javier Cicchelli <javier@rock-n-code.com>

App/Sources/Views/TaskListView.swift

@@ -19,7 +19,13 @@ struct TaskListView: View {
 
     /// Creates a new task list view for a specific group.
     ///
+    /// Initializes the view with a view model configured for the specified group.
+    /// The view model manages the state for completion filtering and task reordering,
+    /// while the view handles the presentation layer including navigation and toolbar.
+    ///
     /// - Parameter group: The todo group category to display tasks for.
+    /// - Note: The group determines which tasks are fetched, whether
+    ///   completion filtering is available, and whether drag and drop reordering is enabled.
     init(group: TodoGroup) {
         _viewModel = .init(initialValue: ViewModel(group: group))
     }
@@ -34,7 +40,9 @@ struct TaskListView: View {
         Content(
             group: viewModel.group,
             showCompleted: viewModel.showCompleted
-        )
+        ) { tasks, source, destination in
+            viewModel.reorderTasks(tasks, from: source, to: destination)
+        }
         .navigationTitle(viewModel.navigationTitle)
         .toolbar {
             if viewModel.canShowCompleted {