feat: add DB migration to add the hash of T&C

migrations/1649944954805-terms-and-conditions-hash.js

@@ -0,0 +1,11 @@
+const { saveConfig } = require('../lib/new-settings-loader')
+
+exports.up = function (next) {
+  return saveConfig({})
+    .then(next)
+    .catch(next)
+}
+
+exports.down = function (next) {
+  next()
+}