Add electron

backend/src/Model/index.ts

@@ -0,0 +1,10 @@
+import { Edge } from './Edge'
+import { TreeNode } from './TreeNode'
+import { TreeNodeFactory } from './TreeNodeFactory'
+import { Tree } from './Tree'
+import { TopicProperties } from './TopicProperties'
+import { Hashable } from './Hashable'
+
+export {
+  Edge, TreeNode, TreeNodeFactory, Tree, TopicProperties, Hashable
+}