chore: Refactor file storage (#5711)

server/storage/vaults.ts

@@ -0,0 +1,10 @@
+import SequelizeEncrypted from "sequelize-encrypted";
+import { Sequelize } from "sequelize-typescript";
+import env from "@server/env";
+
+/**
+ * Encrypted field storage, use via the Encrypted decorator, not directly.
+ */
+export default function vaults() {
+  return SequelizeEncrypted(Sequelize, env.SECRET_KEY);
+}