docs(goctl): goctl 1.3.4 migration note (#1780)

* docs(goctl): goctl 1.3.4 migration note

* adds a simple lang check
* adds migration notes

* chore: remove i18n

* chore: remove todo

tools/goctl/model/sql/command/migrationnotes/migrationnotes.go

@@ -0,0 +1,27 @@
+package migrationnotes
+
+import (
+	"github.com/urfave/cli"
+	"github.com/zeromicro/go-zero/tools/goctl/config"
+	"github.com/zeromicro/go-zero/tools/goctl/util/format"
+)
+
+// BeforeCommands run before comamnd run to show some migration notes
+func BeforeCommands(ctx *cli.Context) error {
+	if err := migrateBefore1_3_4(ctx); err != nil {
+		return err
+	}
+	return nil
+}
+
+func getModelSuffix(style string) (string, error) {
+	cfg, err := config.NewConfig(style)
+	if err != nil {
+		return "", err
+	}
+	baseSuffix, err := format.FileNamingFormat(cfg.NamingFormat, "_model")
+	if err != nil {
+		return "", err
+	}
+	return baseSuffix + ".go", nil
+}