chore: initialize wygj monorepo

backend/script/sql/update/postgres/update_5.3.0-5.3.1.sql

@@ -0,0 +1,7 @@
+ALTER TABLE flow_node DROP COLUMN skip_any_node;
+ALTER TABLE flow_node ADD COLUMN ext varchar(500);
+COMMENT ON COLUMN flow_node.ext IS '扩展属性';
+CREATE INDEX user_associated_idx ON FLOW_USER USING btree (associated);
+
+ALTER TABLE sys_oss ADD COLUMN ext1 varchar(500));
+COMMENT ON COLUMN sys_oss.ext1 IS '扩展属性';