[NEB-71] Nebula: Update example prompts (#5957)

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## PR-Codex overview
This PR introduces a new type `ExamplePrompt` and a list of example prompts in `examplePrompts.ts`. It replaces hardcoded example prompts in `EmptyStateChatPageContent.tsx` with a dynamic mapping from the newly created `examplePrompts`, enhancing maintainability and readability.

### Detailed summary
- Added type `ExamplePrompt` with `title` and `message` properties.
- Created `examplePrompts` array containing several example prompts.
- Refactored `EmptyStateChatPageContent.tsx` to dynamically render `ExamplePrompt` components using `examplePrompts`.
- Removed hardcoded example prompts from `EmptyStateChatPageContent.tsx`.

> ✨ Ask PR-Codex anything about this PR by commenting with `/codex {your question}`

<!-- end pr-codex -->

apps/dashboard/src/app/nebula-app/(app)/components/EmptyStateChatPageContent.tsx

@@ -1,7 +1,8 @@
 "use client";
 
+import { Button } from "@/components/ui/button";
 import { ArrowUpRightIcon } from "lucide-react";
-import { Button } from "../../../../@/components/ui/button";
+import { examplePrompts } from "../data/examplePrompts";
 import { NebulaIcon } from "../icons/NebulaIcon";
 import { ChatBar } from "./ChatBar";
 
@@ -35,44 +36,15 @@ export function EmptyStateChatPageContent(props: {
           />
           <div className="h-5" />
           <div className="flex flex-wrap justify-center gap-2.5">
-            <ExamplePrompt
-              label="USDC contract address on ethereum"
-              onClick={() => {
-                props.sendMessage(
-                  "What is the contract address of USDC on ethereum?",
-                );
-              }}
-            />
-
-            <ExamplePrompt
-              label="last 5 blocks on polygon"
-              onClick={() => {
-                props.sendMessage("What are last 5 blocks on polygon?");
-              }}
-            />
-
-            <ExamplePrompt
-              label="What is thirdweb SDK?"
-              onClick={() => {
-                props.sendMessage("What is thirdweb SDK?");
-              }}
-            />
-            <ExamplePrompt
-              label="How to add connect wallet button"
-              onClick={() => {
-                props.sendMessage(
-                  "How to add connect wallet button on React app?",
-                );
-              }}
-            />
-            <ExamplePrompt
-              label="Show transaction details"
-              onClick={() => {
-                props.sendMessage(
-                  "Show transaction details of 0xff9624116c352c8b090203fbbb563baf32d2b1944f9ac281ff2de6b7d948030e on ethereum",
-                );
-              }}
-            />
+            {examplePrompts.map((prompt) => {
+              return (
+                <ExamplePrompt
+                  key={prompt.title}
+                  label={prompt.title}
+                  onClick={() => props.sendMessage(prompt.message)}
+                />
+              );
+            })}
           </div>
         </div>
       </div>

apps/dashboard/src/app/nebula-app/(app)/data/examplePrompts.ts

@@ -0,0 +1,32 @@
+type ExamplePrompt = {
+  title: string;
+  message: string;
+};
+
+// Note:
+// Keep the title as short as possible so 2 of them can fit in a single row on desktop viewport
+// title is only used for displaying the example - the `message` is sent to server when user clicks on the example - it can be as long and descriptive as needed
+
+export const examplePrompts: ExamplePrompt[] = [
+  {
+    title: "Deploy an ERC-20 Token",
+    message:
+      "Deploy an ERC-20 Token with name 'Hello World', description 'Hello world token deployed by Nebula', and symbol 'HELLO'",
+  },
+  {
+    title: "USDC contract address on Ethereum",
+    message: "What is the USDC contract address on Ethereum?",
+  },
+  {
+    title: "Analyze WETH smart contract",
+    message: "Analyze 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 on ethereum",
+  },
+  {
+    title: "Transfer 0.001 ETH to thirdweb.eth",
+    message: "Transfer 0.001 ETH to thirdweb.eth",
+  },
+  {
+    title: "Using session keys in Unity",
+    message: "How to use session key in Unity?",
+  },
+];