Add commented out slow query log

To easily enable for debugging purposes.

systems/hikari/web-development/default.nix

@@ -102,8 +102,11 @@ in {
             general_log = true;
             general_log_file = "/var/lib/mysql/query.log";
 
+            # slow_query_log = true;
+            # slow_query_log_file = "/var/lib/mysql/slow_query.log";
+            # long_query_time = 1;
+
             bind-address = "127.0.0.1";
-            # = "/var/log/mysql/query.log";
           };
         };
       };