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/field.go

@@ -15,6 +15,7 @@ func genFields(fields []parser.Field) (string, error) {
 		if err != nil {
 			return "", err
 		}
+
 		list = append(list, result)
 	}
 	return strings.Join(list, "\n"), nil
@@ -43,5 +44,6 @@ func genField(field parser.Field) (string, error) {
 	if err != nil {
 		return "", err
 	}
+
 	return output.String(), nil
 }