Finish preliminary email validation, merge user flow w saml/ldap

backend/src/db/migrations/20240426162819_user-alias-optional-username.ts

@@ -0,0 +1,11 @@
+import { Knex } from "knex";
+
+import { TableName } from "../schemas";
+
+export async function up(knex: Knex): Promise<void> {
+  await knex.schema.alterTable(TableName.UserAliases, (t) => {
+    t.string("username").nullable().alter();
+  });
+}
+
+export async function down(): Promise<void> {}