feat(folders-api): add root folder

api/src/controllers/folder.ts

@@ -0,0 +1,21 @@
+import Folder, { MemberType } from '../model/Folder'
+
+export class FolderController {
+  public async addRootFolder() {
+    await addRootFolder()
+  }
+}
+
+const addRootFolder = async () => {
+  let folder = await Folder.findOne({ name: '/' })
+
+  if (folder) return
+
+  folder = new Folder({
+    name: '/',
+    parentFolderUri: '/',
+    type: MemberType.Folder
+  })
+
+  return await folder.save()
+}