feat(goctl/rpc): support external proto imports with cross-package ty… (#5472)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

tools/goctl/rpc/parser/service.go

@@ -2,9 +2,6 @@ package parser
 
 import (
 	"errors"
-	"fmt"
-	"path/filepath"
-	"strings"
 
 	"github.com/emicklei/proto"
 )
@@ -35,20 +32,5 @@ func (s Services) validate(filename string, multipleOpt ...bool) error {
 		return errors.New("only one service expected")
 	}
 
-	name := filepath.Base(filename)
-	for _, service := range s {
-		for _, rpc := range service.RPC {
-			if strings.Contains(rpc.RequestType, ".") {
-				return fmt.Errorf("line %v:%v, request type must defined in %s",
-					rpc.Position.Line,
-					rpc.Position.Column, name)
-			}
-			if strings.Contains(rpc.ReturnsType, ".") {
-				return fmt.Errorf("line %v:%v, returns type must defined in %s",
-					rpc.Position.Line,
-					rpc.Position.Column, name)
-			}
-		}
-	}
 	return nil
 }