feat(demo): add big initial set of messages

Add big initial set of messages to showcase lazy loading

src/test/java/com/flowingcode/vaadin/addons/chatassistant/ChatAssistantLazyLoadingDemo.java

@@ -36,6 +36,7 @@
 import com.vaadin.flow.router.Route;
 import java.time.LocalDateTime;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 
 @DemoSource(sourcePosition = SourcePosition.PRIMARY)
@@ -45,7 +46,81 @@
 @CssImport("./styles/chat-assistant-styles-demo.css")
 public class ChatAssistantLazyLoadingDemo extends VerticalLayout {
 
-  List<Message> messages = new ArrayList<Message>();
+  List<Message> messages = new ArrayList<>(Arrays.asList(
+      Message.builder().name("Claudius").content("I have sent to seek him and to find the body.\n"
+          + "How dangerous is it that this man goes loose!\n"
+          + "Yet must not we put the strong law on him.\n"
+          + "He's loved of the distracted multitude,\n"
+          + "Who like not in their judgment, but their eyes.\n"
+          + "And where 'tis so, th' offender's scourge is weighed,\n"
+          + "But never the offense. To bear all smooth and even,\n"
+          + "This sudden sending him away must seem\n"
+          + "Deliberate pause. Diseases desperate grown\n"
+          + "By desperate appliance are relieved,\n"
+          + "Or not at all.").build(),
+      Message.builder().name("Rosencrantz").content("(Enter)").build(),
+      Message.builder().name("Claudius").content("How now, what hath befall'n?").build(),
+      Message.builder().name("Rosencrantz").content("Where the dead body is bestowed, my lord,\n"
+          + "We cannot get from him.").build(),
+      Message.builder().name("Claudius").content("But where is he?").build(),
+      Message.builder().name("Rosencrantz").content("Without, my lord; guarded, to know your pleasure.").build(),
+      Message.builder().name("Claudius").content("Bring him before us.").build(),
+      Message.builder().name("Rosencrantz").content("Ho, Guildenstern! Bring in my lord.").build(),
+      Message.builder().name("Claudius").content("Now, Hamlet, where's Polonius?").build(),
+      Message.builder().name("Hamlet").content("At supper.").build(),
+      Message.builder().name("Claudius").content("At supper? Where? ").build(),
+      Message.builder().name("Hamlet").content("Not where he eats, but where he is eaten. A certain \n"
+          + "convocation of politic worms are e'en at him. Your worm is your \n"
+          + "only emperor for diet. We fat all creatures else to fat us, and \n"
+          + "we fat ourselves for maggots. Your fat king and your lean beggar \n"
+          + "is but variable service- two dishes, but to one table. That's the \n"
+          + "end.").build(),
+      Message.builder().name("Claudius").content("Alas, alas!").build(),
+      Message.builder().name("Hamlet").content("A man may fish with the worm that hath eat of a king, and eat \n"
+          + "of the fish that hath fed of that worm.").build(),
+      Message.builder().name("Claudius").content("What dost thou mean by this?").build(),
+      Message.builder().name("Hamlet").content("Nothing but to show you how a king may go a progress through \n"
+          + "the guts of a beggar.\n"
+          + "").build(),
+      Message.builder().name("Claudius").content("Where is Polonius?").build(),
+      Message.builder().name("Hamlet").content("In heaven. Send thither to see. If your messenger find him not \n"
+          + "there, seek him i' th' other place yourself. But indeed, if you\n"
+          + "find him not within this month, you shall nose him as you go up \n"
+          + "the stair, into the lobby.").build(),
+      Message.builder().name("Claudius").content("Go seek him there.").build(),
+      Message.builder().name("Hamlet").content("He will stay till you come.").build(),
+      Message.builder().name("Claudius").content("Hamlet, this deed, for thine especial safety,- \n"
+          + "Which we do tender as we dearly grieve \n"
+          + "For that which thou hast done,- must send thee hence \n"
+          + "With fiery quickness. Therefore prepare thyself. \n"
+          + "The bark is ready and the wind at help, \n"
+          + "Th' associates tend, and everything is bent \n"
+          + "For England.").build(),
+      Message.builder().name("Hamlet").content("For England?").build(),
+      Message.builder().name("Claudius").content("Ay, Hamlet.").build(),
+      Message.builder().name("Hamlet").content("Good.").build(),
+      Message.builder().name("Claudius").content("So is it, if thou knew'st our purposes.").build(),
+      Message.builder().name("Hamlet").content("I see a cherub that sees them. But come, for England! \n"
+          + "Farewell, dear mother.").build(),
+      Message.builder().name("Claudius").content("Thy loving father, Hamlet.").build(),
+      Message.builder().name("Hamlet").content("My mother! Father and mother is man and wife; man and wife is\n"
+          + "one flesh; and so, my mother. Come, for England!").build(),
+      Message.builder().name("Claudius").content("Follow him at foot; tempt him with speed aboard. \n"
+          + "Delay it not; I'll have him hence to-night. \n"
+          + "Away! for everything is seal'd and done\n"
+          + "That else leans on th' affair. Pray you make haste.").build(),
+      Message.builder().name("Claudius").content("And, England, if my love thou hold'st at aught,- \n"
+          + "As my great power thereof may give thee sense, \n"
+          + "Since yet thy cicatrice looks raw and red\n"
+          + "After the Danish sword, and thy free awe \n"
+          + "Pays homage to us,- thou mayst not coldly set \n"
+          + "Our sovereign process, which imports at full, \n"
+          + "By letters congruing to that effect, \n"
+          + "The present death of Hamlet. Do it, England; \n"
+          + "For like the hectic in my blood he rages, \n"
+          + "And thou must cure me. Till I know 'tis done, \n"
+          + "Howe'er my haps, my joys were ne'er begun. ").build()
+      ));
 
   public ChatAssistantLazyLoadingDemo() {
     ChatAssistant chatAssistant = new ChatAssistant();
@@ -78,10 +153,6 @@ public ChatAssistantLazyLoadingDemo() {
       chatAssistant.scrollToEnd();
       message.clear();
     });
-    Message welcomeMessage = Message.builder().content("Hello, I am here to assist you")
-        .messageTime(LocalDateTime.now())
-        .name("Assistant").avatar("chatbot.png").build();
-    messages.add(welcomeMessage);
     chatAssistant.setSubmitListener(ev -> {
       Message userMessage = Message.builder().messageTime(LocalDateTime.now())
           .name("User").content(ev.getValue()).build();