chore: get or remove by states

pkg/utils/slice.go

@@ -11,3 +11,12 @@ func SliceEqual[T comparable](a, b []T) bool {
 	}
 	return true
 }
+
+func SliceContains[T comparable](arr []T, v T) bool {
+	for _, vv := range arr {
+		if vv == v {
+			return true
+		}
+	}
+	return false
+}