Update

Assets/D.A. Assets/DA-Shared/Editor/Tools/ContextMenuItems.cs

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+using DA_Assets.Constants;
+using DA_Assets.DM;
+using DA_Assets.Extensions;
+using System.Collections.Generic;
+using UnityEditor;
+using UnityEngine;
+
+namespace DA_Assets.Tools
+{
+    public class ContextMenuItems
+    {
+        public const string ResetToPrefabState = "Reset to prefab state";
+        public const string ResetAllComponents = "Reset all components to prefab state";
+        public const string DestroyChilds = "Destroy Childs";
+        public const string TryBackupActiveScene = "Try Backup Active Scene";
+        public const string SimplifyHierarchy = "Simplify the hierarchy";
+
+        [MenuItem("Tools/" + DAConstants.Publisher + "/" + nameof(DA_Assets.Tools) + ": " + "Dependency Manager", false, 89)]
+        public static void ShowWindow()
+        {
+            DependenciesWindow window = EditorWindow.GetWindow<DependenciesWindow>("Dependency Manager");
+            window.minSize = new Vector2(550, 550);
+            window.maxSize = new Vector2(550, 550);
+            window.Show();
+        }
+
+        [MenuItem("GameObject/Tools/" + DAConstants.Publisher + "/" + nameof(DA_Assets.Tools) + ": " + DestroyChilds, false, 1)]
+        private static void DestroyChilds_OnClick()
+        {
+            bool backuped = SceneBackuper.TryBackupActiveScene();
+
+            if (!backuped)
+            {
+                Debug.LogError("log_cant_execute_because_no_backup");
+                return;
+            }
+
+            if (Selection.activeGameObject != null)
+            {
+                Selection.activeGameObject.DestroyChilds();
+            }
+            else
+            {
+                Debug.LogError($"Selection.activeGameObject is null.");
+            }
+        }
+
+        [MenuItem("Tools/" + DAConstants.Publisher + "/" + nameof(DA_Assets.Tools) + ": " + TryBackupActiveScene, false, 2)]
+        private static void TryBackupActiveScene_OnClick()
+        {
+            SceneBackuper.TryBackupActiveScene();
+        }
+
+        [MenuItem("GameObject/Tools/" + DAConstants.Publisher + "/" + nameof(DA_Assets.Tools) + ": " + SimplifyHierarchy, false, 92)]
+        private static void SetSelectedAsParentForAllChilds_OnClick()
+        {
+            GameObject selectedGameObject = Selection.activeGameObject;
+
+            if (selectedGameObject == null)
+            {
+                Debug.LogError(string.Format(nameof(GameObject), "'{0}' not selected in hierarchy."));
+                return;
+            }
+
+            List<Transform> childs = new List<Transform>();
+            SetSelectedAsParentForAllChild(selectedGameObject);
+            foreach (Transform child in childs)
+            {
+                child.SetParent(selectedGameObject.transform);
+            }
+
+            void SetSelectedAsParentForAllChild(GameObject @object)
+            {
+                if (@object == null)
+                    return;
+
+                foreach (Transform child in @object.transform)
+                {
+                    if (child == null)
+                        continue;
+
+                    childs.Add(child);
+
+                    SetSelectedAsParentForAllChild(child.gameObject);
+                }
+            }
+        }
+
+        [MenuItem("GameObject/Tools/" + DAConstants.Publisher + "/" + nameof(DA_Assets.Tools) + ": " + ResetToPrefabState, false, 93)]
+        private static void ResetToPrefabState_OnClick()
+        {
+            GameObject selectedGameObject = Selection.activeGameObject;
+
+            if (selectedGameObject == null)
+            {
+                Debug.LogError(string.Format(nameof(GameObject), "'{0}' not selected in hierarchy."));
+                return;
+            }
+
+            PrefabUtility.RevertPrefabInstance(Selection.activeGameObject, InteractionMode.AutomatedAction);
+
+            Debug.Log(string.Format(selectedGameObject.name, "'{0}' has been reset to a prefab state."));
+        }
+
+        [MenuItem("GameObject/Tools/" + DAConstants.Publisher + "/" + nameof(DA_Assets.Tools) + ": " + ResetAllComponents, false, 94)]
+        private static void ResetAllComponents_OnClick()
+        {
+            GameObject selectedGameObject = Selection.activeGameObject;
+
+            if (selectedGameObject == null)
+            {
+                Debug.LogError(string.Format(nameof(GameObject), "'{0}' not selected in hierarchy."));
+                return;
+            }
+
+            Component[] components = selectedGameObject.GetComponents<Component>();
+
+            if (components.IsEmpty())
+            {
+                Debug.LogError(string.Format(selectedGameObject.name, "No components in '{0}'."));
+                return;
+            }
+
+            int count = 0;
+
+            foreach (var item in components)
+            {
+                SerializedObject serializedObject = new SerializedObject(item);
+                SerializedProperty propertyIterator = serializedObject.GetIterator();
+
+                while (propertyIterator.NextVisible(true))
+                {
+                    PrefabUtility.RevertPropertyOverride(propertyIterator, InteractionMode.AutomatedAction);
+                    count++;
+                }
+            }
+
+            Debug.Log(string.Format(count.ToString(), "{0} properties reset."));
+        }
+    }
+}