feat: extension support (#78)

pkg/rest/model/task.go

@@ -3,7 +3,7 @@ package model
 import "github.com/GopeedLab/gopeed/pkg/base"
 
 type CreateTask struct {
-	Rid  string        `json:"rid"`
-	Req  *base.Request `json:"req"`
-	Opts *base.Options `json:"opts"`
+	Rid string        `json:"rid"`
+	Req *base.Request `json:"req"`
+	Opt *base.Options `json:"opt"`
 }