Added simple TOTP Two Factor Authentication

db/patch12.sql

@@ -0,0 +1,10 @@
+-- You should not modify if this have pushed to Github, unless it does serious wrong with the db.
+BEGIN TRANSACTION;
+
+ALTER TABLE user
+    ADD twofa_secret VARCHAR(64);
+
+ALTER TABLE user
+    ADD twofa_status BOOLEAN default 0;
+
+COMMIT;