feature: refactor api parse to g4 (#365)

* feature: refactor api parse to g4

* new g4 parser

* add CHANGE_LOG.MD

* refactor

* fix byte bug

* refactor

* optimized

* optimized

* revert

* update readme.md

* update readme.md

* update readme.md

* update readme.md

* remove no need

* fix java gen

* add upgrade

* resolve confilits

Co-authored-by: anqiansong <anqiansong@xiaoheiban.cn>

tools/goctl/upgrade/upgrade.go

@@ -0,0 +1,18 @@
+package upgrade
+
+import (
+	"fmt"
+
+	"github.com/tal-tech/go-zero/tools/goctl/rpc/execx"
+	"github.com/urfave/cli"
+)
+
+func Upgrade(_ *cli.Context) error {
+	info, err := execx.Run("GO111MODULE=on GOPROXY=https://goproxy.cn/,direct go get -u github.com/tal-tech/go-zero/tools/goctl", "")
+	if err != nil {
+		return err
+	}
+
+	fmt.Print(info)
+	return nil
+}