BAEL-4322 add sample codes for dynamic delay setting (#10531)

Co-authored-by: Yavuz Tas <ytas@vwd.com>

spring-scheduling/src/main/java/com/baeldung/scheduling/dynamic/TickService.java

@@ -0,0 +1,22 @@
+package com.baeldung.scheduling.dynamic;
+
+import org.springframework.stereotype.Service;
+
+@Service
+public class TickService {
+
+    private long delay = 0;
+
+    public long getDelay() {
+        this.delay += 1000;
+        System.out.println("delaying " + this.delay + " milliseconds...");
+        return this.delay;
+    }
+
+    public void tick() {
+        final long now = System.currentTimeMillis() / 1000;
+        System.out
+          .println("schedule tasks with dynamic delay - " + now);
+    }
+
+}