added Search function

search.go

@@ -0,0 +1,11 @@
+package slices
+
+func Search[T any](slice []T, f func(a, b T) T) T {
+	if len(slice) == 0 {
+		return *new(T)
+	}
+
+	value := slice[0]
+	Each(slice, func(v T) { value = f(value, v) })
+	return value
+}