feature: two evaluate operate func addtion in package stream (#3129)

Co-authored-by: Riven <Riven.chen@hairobotics.com>

core/fx/stream.go

@@ -540,3 +540,25 @@ func newOptions() *rxOptions {
 		workers: defaultWorkers,
 	}
 }
+
+// Max returns the maximum item from the underlying source.
+func (s Stream) Max(less LessFunc) any {
+	var maxItem any = nil
+	for item := range s.source {
+		if maxItem == nil || less(maxItem, item) {
+			maxItem = item
+		}
+	}
+	return maxItem
+}
+
+// Min returns the minimum item from the underlying source.
+func (s Stream) Min(less LessFunc) any {
+	var minItem any = nil
+	for item := range s.source {
+		if minItem == nil || !less(minItem, item) {
+			minItem = item
+		}
+	}
+	return minItem
+}