feat: Add goctl quickstart (#1889)

* Add goctl quickstart

* Format code

* Format code

tools/goctl/quickstart/run.go

@@ -0,0 +1,35 @@
+package quickstart
+
+import (
+	"os"
+	"os/exec"
+	"runtime"
+
+	"github.com/zeromicro/go-zero/tools/goctl/vars"
+)
+
+func goStart(dir string) {
+	goproxy := "GOPROXY=https://goproxy.cn"
+	execCommand(dir, "go run .", goproxy)
+}
+
+func goModTidy(dir string) int {
+	goproxy := "GOPROXY=https://goproxy.cn"
+	log.Debug(">> go mod tidy")
+	return execCommand(dir, "go mod tidy", goproxy)
+}
+
+func execCommand(dir string, arg string, envArgs ...string) int {
+	cmd := exec.Command("sh", "-c", arg)
+	if runtime.GOOS == vars.OsWindows {
+		cmd = exec.Command("cmd.exe", "/c", arg)
+	}
+	env := append([]string(nil), os.Environ()...)
+	env = append(env, envArgs...)
+	cmd.Env = env
+	cmd.Dir = dir
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	_ = cmd.Run()
+	return cmd.ProcessState.ExitCode()
+}