needed migration file

lnbits/extensions/ngrok/__init__.py

@@ -1,4 +1,7 @@
 from quart import Blueprint
+from lnbits.db import Database
+
+db = Database("ext_example")
 
 ngrok_ext: Blueprint = Blueprint("ngrok", __name__, template_folder="templates")
 

lnbits/extensions/ngrok/migrations.py

@@ -0,0 +1,11 @@
+# async def m001_initial(db):
+
+#    await db.execute(
+#        """
+#        CREATE TABLE example.example (
+#            id TEXT PRIMARY KEY,
+#            wallet TEXT NOT NULL,
+#            time TIMESTAMP NOT NULL DEFAULT """ + db.timestamp_now + """
+#        );
+#    """
+#    )