feat: Add goctl quickstart (#1889)

* Add goctl quickstart

* Format code

* Format code

tools/goctl/quickstart/micro.go

@@ -0,0 +1,77 @@
+package quickstart
+
+import (
+	_ "embed"
+	"io/ioutil"
+	"path/filepath"
+
+	"github.com/zeromicro/go-zero/core/logx"
+	"github.com/zeromicro/go-zero/core/service"
+	"github.com/zeromicro/go-zero/tools/goctl/util/pathx"
+)
+
+const (
+	rpcEtcContent = `Name: greet.rpc
+ListenOn: 127.0.0.1:8080
+`
+	protoName = "greet.proto"
+)
+
+var (
+	//go:embed idl/greet.proto
+	protocContent string
+
+	zRPCWorkDir string
+)
+
+type serviceImpl struct {
+	starter func()
+}
+
+func (s serviceImpl) Start() {
+	s.starter()
+}
+
+func (s serviceImpl) Stop() {}
+
+func initRPCProto() error {
+	zRPCWorkDir = filepath.Join(projectDir, "rpc")
+	if err := pathx.MkdirIfNotExist(zRPCWorkDir); err != nil {
+		return err
+	}
+
+	protoFilename := filepath.Join(zRPCWorkDir, protoName)
+	rpcBytes := []byte(protocContent)
+	return ioutil.WriteFile(protoFilename, rpcBytes, 0666)
+}
+
+type micro struct{}
+
+func newMicroService() micro {
+	m := micro{}
+	m.mustStartRPCProject()
+	return m
+}
+
+func (m micro) mustStartRPCProject() {
+	logx.Must(initRPCProto())
+	log.Debug(">> Generating quickstart zRPC project...")
+	arg := "goctl rpc protoc " + protoName + " --go_out=. --go-grpc_out=. --zrpc_out=. --verbose"
+	execCommand(zRPCWorkDir, arg)
+	etcFile := filepath.Join(zRPCWorkDir, "etc", "greet.yaml")
+	logx.Must(ioutil.WriteFile(etcFile, []byte(rpcEtcContent), 0666))
+}
+
+func (m micro) start() {
+	mono := newMonoService(true)
+	goModTidy(projectDir)
+	sg := service.NewServiceGroup()
+	sg.Add(serviceImpl{func() {
+		log.Debug(">> Ready to start an zRPC server...")
+		goStart(zRPCWorkDir)
+	}})
+	sg.Add(serviceImpl{func() {
+		mono.start()
+	}})
+	sg.Start()
+}