Add compact slice function

sliceutils/sliceUtils.go

@@ -80,3 +80,11 @@ func Contains[T comparable](a []T, b T) bool {
 	}
 	return false
 }
+
+func Compact[T any](a []T, compactor func(acc T, next T) T) T {
+	var acc T
+	for _, v := range a {
+		acc = compactor(acc, v)
+	}
+	return acc
+}