chore(runner): support fetch detail stage data

Signed-off-by: Bo-Yi.Wu <appleboy.tw@gmail.com>

core/scheduler.go

@@ -2,10 +2,13 @@ package core
 
 import (
 	"context"
+	"errors"
 
 	runnerv1 "gitea.com/gitea/proto-go/runner/v1"
 )
 
+var ErrDataLock = errors.New("Data Lock Error")
+
 type Filter struct {
 	Kind   string
 	Type   string