patch model&rpc (#207)

* change column to read from information_schema

* reactor generate mode from datasource

* reactor generate mode from datasource

* add primary key check logic

* resolve rebase conflicts

* add naming style

* add filename test case

* resolve rebase conflicts

* reactor test

* add test case

* change shell script to makefile

* update rpc new

* update gen_test.go

* format code

* format code

* update test

* generates alias

tools/goctl/model/sql/gen/delete.go

@@ -42,5 +42,6 @@ func genDelete(table Table, withCache bool) (string, error) {
 	if err != nil {
 		return "", err
 	}
+
 	return output.String(), nil
 }