fix(store): Marketplace - Navbar should say "Marketplace" rather than "Agent Store" (Significant-Gravitas#9069)

Fixes Significant-Gravitas#9067 

### Changes 🏗️

- Renamed elements from Agent Store to Marketplace

Author: Swiftyos

autogpt_platform/frontend/src/app/layout.tsx

@@ -37,7 +37,7 @@ export default async function RootLayout({
             <Navbar
               links={[
                 {
-                  name: "Agent Store",
+                  name: "Marketplace",
                   href: "/store",
                 },
                 {

autogpt_platform/frontend/src/app/store/page.tsx

@@ -107,7 +107,7 @@ async function getStoreData() {
 
 // FIX: Correct metadata
 export const metadata: Metadata = {
-  title: "Agent Store - NextGen AutoGPT",
+  title: "Marketplace - NextGen AutoGPT",
   description: "Find and use AI Agents created by our community",
   applicationName: "NextGen AutoGPT Store",
   authors: [{ name: "AutoGPT Team" }],
@@ -123,7 +123,7 @@ export const metadata: Metadata = {
     follow: true,
   },
   openGraph: {
-    title: "Agent Store - NextGen AutoGPT",
+    title: "Marketplace - NextGen AutoGPT",
     description: "Find and use AI Agents created by our community",
     type: "website",
     siteName: "NextGen AutoGPT Store",
@@ -138,7 +138,7 @@ export const metadata: Metadata = {
   },
   twitter: {
     card: "summary_large_image",
-    title: "Agent Store - NextGen AutoGPT",
+    title: "Marketplace - NextGen AutoGPT",
     description: "Find and use AI Agents created by our community",
     images: ["/images/store-twitter.png"],
   },

autogpt_platform/frontend/src/components/agptui/FilterChips.tsx

@@ -8,7 +8,7 @@ interface FilterChipsProps {
   onFilterChange?: (selectedFilters: string[]) => void;
   multiSelect?: boolean;
 }
-/** FilterChips is a component that allows the user to select filters from a list of badges. It is used on the Agent Store home page */
+/** FilterChips is a component that allows the user to select filters from a list of badges. It is used on the Marketplace home page */
 export const FilterChips: React.FC<FilterChipsProps> = ({
   badges,
   onFilterChange,

autogpt_platform/frontend/src/components/agptui/Navbar.tsx

@@ -109,7 +109,7 @@ export const Navbar = async ({ links, menuItemGroups }: NavbarProps) => {
                   groupName: "Navigation",
                   items: links.map((link) => ({
                     icon:
-                      link.name === "Agent Store"
+                      link.name === "Marketplace"
                         ? IconType.Marketplace
                         : link.name === "Library"
                           ? IconType.Library

autogpt_platform/frontend/src/components/nav/NavBarButtons.tsx

@@ -25,7 +25,7 @@ export function NavBarButtons({ className }: { className?: string }) {
     },
     {
       href: "/store",
-      text: "Agent Store",
+      text: "Marketplace",
       icon: <IconMarketplace />,
     },
   ];