Support MFA recovery tokens

app/models/auth/MFARecoveryCode.model.js

@@ -0,0 +1,23 @@
+const { Model } = require('flitter-orm')
+const bcrypt = require('bcrypt')
+
+class MFARecoveryCodeModel extends Model {
+    static get schema() {
+        return {
+            code: String,
+            used: { type: Boolean, default: false },
+            generated: { type: Date, default: () => new Date },
+        }
+    }
+
+    static async create(value) {
+        const code = await bcrypt.hash(value, 10)
+        return new this({ code })
+    }
+
+    async verify(code) {
+        return await bcrypt.compare(code, this.code)
+    }
+}
+
+module.exports = exports = MFARecoveryCodeModel