feat: Add goctl quickstart (#1889)

* Add goctl quickstart

* Format code

* Format code

tools/goctl/quickstart/quickstart.go

@@ -0,0 +1,79 @@
+package quickstart
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/spf13/cobra"
+	"github.com/zeromicro/go-zero/core/logx"
+	"github.com/zeromicro/go-zero/tools/goctl/util/console"
+	"github.com/zeromicro/go-zero/tools/goctl/util/ctx"
+	"github.com/zeromicro/go-zero/tools/goctl/util/pathx"
+)
+
+const baseDir = "greet"
+
+var (
+	log        = console.NewColorConsole(true)
+	projectDir string
+)
+
+func cleanWorkSpace(projectDir string) {
+	var command string
+	var breakeState bool
+	fmt.Printf("Detected that the %q already exists, do you clean up?"+
+		" [y: YES, n: NO]: ", projectDir)
+
+	for {
+		fmt.Scanln(&command)
+		switch command {
+		case "y":
+			log.Debug("Clean workspace...")
+			_ = os.RemoveAll(projectDir)
+			breakeState = true
+			break
+		case "n":
+			log.Error("User canceled")
+			os.Exit(1)
+		default:
+			fmt.Println("Invalid command, try again...")
+		}
+
+		if breakeState {
+			break
+		}
+	}
+}
+
+func initProject() {
+	wd, err := os.Getwd()
+	logx.Must(err)
+
+	projectDir = filepath.Join(wd, baseDir)
+	if exists := pathx.FileExists(projectDir); exists {
+		cleanWorkSpace(projectDir)
+	}
+
+	log.Must(pathx.MkdirIfNotExist(projectDir))
+	if hasGoMod, _ := ctx.IsGoMod(projectDir); hasGoMod {
+		return
+	}
+	if exitCode := execCommand(projectDir, "go mod init "+baseDir); exitCode != 0 {
+		log.Fatalln("Init process exit")
+	}
+}
+
+func run(_ *cobra.Command, _ []string) error {
+	initProject()
+	switch varStringServiceType {
+	case serviceTypeMono:
+		newMonoService(false).start()
+	case serviceTypeMicro:
+		newMicroService().start()
+	default:
+		return fmt.Errorf("invalid service type, expected %s | %s",
+			serviceTypeMono, serviceTypeMicro)
+	}
+	return nil
+}