chore: import upstream snapshot with attribution

integrations/dropbox/definitions/entities/folder.ts

@@ -0,0 +1,13 @@
+import * as sdk from '@botpress/sdk'
+import { BaseItem } from './abstract/base-item'
+const { z } = sdk
+
+export namespace Folder {
+  const _fields = {
+    ...BaseItem.schema.shape,
+    itemType: z.literal('folder').title('Item Type').describe('The type of the item.'),
+  } as const
+
+  export const schema = z.object(_fields)
+  export type InferredType = sdk.z.infer<typeof schema>
+}