feat(goctl): go work multi-module support (#1800)

* feat(goctl): go work multi-module support

Resolve: #1793

* chore: print log when getting project ctx fails

tools/goctl/util/ctx/context.go

@@ -2,6 +2,7 @@ package ctx
 
 import (
 	"errors"
+	"fmt"
 	"path/filepath"
 
 	"github.com/zeromicro/go-zero/tools/goctl/rpc/execx"
@@ -31,6 +32,7 @@ func Prepare(workDir string) (*ProjectContext, error) {
 	if err == nil {
 		return ctx, nil
 	}
+	fmt.Printf("get project context from workdir[%s] failed: %s\n", workDir, err)
 
 	name := filepath.Base(workDir)
 	_, err = execx.Run("go mod init "+name, workDir)