Add server with basic auth stuff

sticker/server/database/base.py

@@ -0,0 +1,9 @@
+from typing import ClassVar, TYPE_CHECKING
+
+from mautrix.util.async_db import Database
+
+fake_db = Database("") if TYPE_CHECKING else None
+
+
+class Base:
+    db: ClassVar[Database] = fake_db