Add action to pull down mask (#9015)

* Add action to pull down mask

* Update based on review comments

* fix access

* cleanup

* Update based on review comments

* revert change to ToggleableClothingSystem

* switch to unequip

* Specify the unequip is for togglemaskevent only

* fix issue of activating mask in hands with something else in mask slot

* Update based on review comments

* switch to dependency for ActionSystem for consistency

* whoops other instance too

* review changes

Content.Server/Clothing/Components/MaskComponent.cs

@@ -0,0 +1,20 @@
+using Content.Shared.Actions;
+using Content.Shared.Actions.ActionTypes;
+
+namespace Content.Server.Clothing.Components
+{
+    [Access(typeof(MaskSystem))]
+    [RegisterComponent]
+    public sealed class MaskComponent : Component
+    {
+        /// <summary>
+        /// This mask can be toggled (pulled up/down)
+        /// </summary>
+        [DataField("toggleAction")]
+        public InstantAction? ToggleAction = null;
+
+        public bool IsToggled = false;
+    }
+
+    public sealed class ToggleMaskEvent : InstantActionEvent { }
+}