Add MFA support

app/models/auth/MFAToken.model.js

@@ -0,0 +1,25 @@
+const { Model } = require('flitter-orm')
+const speakeasy = require('speakeasy')
+
+class MFATokenModel extends Model {
+    static get services() {
+        return [...super.services, 'MFA']
+    }
+
+    static get schema() {
+        return {
+            secret: String,
+            otpauth_url: String,
+        }
+    }
+
+    verify(value) {
+        return speakeasy.totp.verify({
+            secret: this.secret,
+            encoding: 'base32',
+            token: value,
+        })
+    }
+}
+
+module.exports = exports = MFATokenModel