Add some comments

Author: kabir

tck/src/main/java/org/wildfly/extras/a2a/server/jakarta/tck/AgentCardProducer.java

@@ -11,6 +11,9 @@
 import io.a2a.spec.AgentCard;
 import io.a2a.spec.AgentSkill;
 
+/**
+ * This is a copy of the AgentCardProducer from the a2a-java SDK's tck/ module
+ */
 @ApplicationScoped
 public class AgentCardProducer {
 

tck/src/main/java/org/wildfly/extras/a2a/server/jakarta/tck/AgentExecutorProducer.java

@@ -16,6 +16,9 @@
 import io.a2a.spec.TaskStatus;
 import io.a2a.spec.TaskStatusUpdateEvent;
 
+/**
+ * This is a copy of the AgentExecutorProducer from the a2a-java SDK's tck/ module
+ */
 @ApplicationScoped
 public class AgentExecutorProducer {