created utils file to better organize code

pkg/pipe/arbiter.go

@@ -4,10 +4,7 @@ import (
 	"context"
 	"fmt"
 	"log"
-	"os"
-	"os/signal"
 	"sync/atomic"
-	"syscall"
 	"time"
 
 	"github.com/vertex-lab/crawler_v2/pkg/graph"
@@ -214,13 +211,3 @@ func Promote(db redb.RedisDB, node graph.ID) error {
 
 	return db.Promote(ctx, node)
 }
-
-// HandleSignals listens for OS signals and triggers context cancellation.
-func HandleSignals(cancel context.CancelFunc) {
-	signals := make(chan os.Signal, 1)
-	signal.Notify(signals, syscall.SIGINT, syscall.SIGTERM)
-	<-signals
-
-	log.Println("signal received. shutting down...")
-	cancel()
-}