feat(subscribe): add traffic limit rules and user traffic stats

- Add subscribe traffic_limit schema and migration\n- Support traffic_limit in admin create/update and list/details\n- Apply traffic_limit when building server user list speed limits\n- Add public user traffic stats API

internal/handler/public/user/getUserTrafficStatsHandler.go

@@ -0,0 +1,26 @@
+package user
+
+import (
+	"github.com/gin-gonic/gin"
+	"github.com/perfect-panel/server/internal/logic/public/user"
+	"github.com/perfect-panel/server/internal/svc"
+	"github.com/perfect-panel/server/internal/types"
+	"github.com/perfect-panel/server/pkg/result"
+)
+
+// Get User Traffic Statistics
+func GetUserTrafficStatsHandler(svcCtx *svc.ServiceContext) func(c *gin.Context) {
+	return func(c *gin.Context) {
+		var req types.GetUserTrafficStatsRequest
+		_ = c.ShouldBind(&req)
+		validateErr := svcCtx.Validate(&req)
+		if validateErr != nil {
+			result.ParamErrorResult(c, validateErr)
+			return
+		}
+
+		l := user.NewGetUserTrafficStatsLogic(c.Request.Context(), svcCtx)
+		resp, err := l.GetUserTrafficStats(&req)
+		result.HttpResult(c, resp, err)
+	}
+}

internal/handler/routes.go

@@ -955,6 +955,9 @@ func RegisterHandlers(router *gin.Engine, serverCtx *svc.ServiceContext) {
 		// Reset User Subscribe Token
 		publicUserGroupRouter.PUT("/subscribe_token", publicUser.ResetUserSubscribeTokenHandler(serverCtx))
 
+		// Get User Traffic Statistics
+		publicUserGroupRouter.GET("/traffic_stats", publicUser.GetUserTrafficStatsHandler(serverCtx))
+
 		// Unbind Device
 		publicUserGroupRouter.PUT("/unbind_device", publicUser.UnbindDeviceHandler(serverCtx))