Merge Request for Issue/11 - list variables

Closes #11 (closed)

Make sure the new (and separate) type of Scriptable Variable for lists of values has the API we want.

Scriptable Variables/Variables/Base Types/BooleanListVariable.cs

+using UnityEngine;
+
+namespace Shared.ScriptableVariables {
+  // A list of bool values to share across components, scenes, and prefabs
+  [CreateAssetMenu(menuName = "Scriptable Objects/Variables/Boolean List")]
+  public class BooleanListVariable : ListScriptableVariable<bool> {
+    //---------------------------------------------------------------------------
+    [ContextMenu("Reset To Default Value")]
+    public void ContextMenuReset() {
+      Reset();
+    }
+  }
+
+#if UNITY_EDITOR
+  //-----------------------------------------------------------------------------
+  [UnityEditor.CustomEditor(typeof(BooleanListVariable))]
+  [UnityEditor.CanEditMultipleObjects]
+  public class BooleanListScriptableVariableEditor : BooleanListVariable.BaseListScriptableVariableEditor {
+  }
+#endif
+}