Fancy Verb Menu & Verb API Refactor (#928)

Content.Shared/GameObjects/Verbs/VerbVisibility.cs

@@ -0,0 +1,23 @@
+namespace Content.Shared.GameObjects
+{
+    /// <summary>
+    /// Possible states of visibility for the verb in the right click menu.
+    /// </summary>
+    public enum VerbVisibility
+    {
+        /// <summary>
+        /// The verb will be listed in the right click menu.
+        /// </summary>
+        Visible,
+
+        /// <summary>
+        /// The verb will be listed, but it will be grayed out and unable to be clicked on.
+        /// </summary>
+        Disabled,
+
+        /// <summary>
+        /// The verb will not be listed in the right click menu.
+        /// </summary>
+        Invisible
+    }
+}