feat: 新增主动拉取与多类型回调功能

- 新增 ActivePull 实体、DAO、DTO 及 Service，支持主动拉取任务管理
- 新增 ComposeCallback、VideoCallback、HttpNodeCallback 多类型回调接口
- FlowExecution 增加 NodeGroupId 和 TotalTokens 字段，支持节点组追踪与 Token 统计
- ExecutedNodes 结构由字符串列表改为包含执行状态的节点对象列表
- 重构回调通知机制，统一 Notify 函数调用
- 优化输出项类型判断逻辑，新增文件类型标识

workflow/model/entity/active_pull.go

@@ -0,0 +1,28 @@
+package entity
+
+import "gitea.com/red-future/common/beans"
+
+type ActivePull struct {
+	beans.SQLBaseDO `orm:",inherit"` // 嵌入基础字段：Id, TenantId, Creator, CreatedAt, Updater, UpdatedAt, DeletedAt
+
+	Type             string         `orm:"type" json:"type"`
+	RequestParament  map[string]any `orm:"request_parament" json:"requestParament"`
+	ResponseParament map[string]any `orm:"response_parament" json:"responseParament"`
+	Extension        map[string]any `orm:"extension" json:"extension"`
+}
+
+type activePullCol struct {
+	beans.SQLBaseCol
+	Type             string
+	RequestParament  string
+	ResponseParament string
+	Extension        string
+}
+
+var ActivePullCol = activePullCol{
+	SQLBaseCol:       beans.DefSQLBaseCol,
+	Type:             "type",
+	RequestParament:  "request_parament",
+	ResponseParament: "response_parament",
+	Extension:        "extension",
+}