add support for operator accounts & bans

patch-schema/op-accounts.sql

@@ -0,0 +1,12 @@
+BEGIN;
+
+ALTER TABLE IF EXISTS public.users ADD COLUMN op boolean;
+
+CREATE TABLE public.bans
+(
+    user_id integer NOT NULL,
+    expires timestamp with time zone,
+    PRIMARY KEY (user_id)
+);
+
+END;