Add project management support and integrate customer-project functionality

internal_frontend/app/projects/page.tsx

@@ -0,0 +1,7 @@
+export default function ProjectsPage() {
+    return (
+        <div className="container mx-auto p-4">
+            <h1 className="text-2xl font-bold">Project Overview</h1>
+        </div>
+    );
+}