Add state enums and HomeLayout styling improvements

Introduced generated stateE15Enum and stateFdaEnum TypeScript types for both private and public API models. Updated HomeLayout to use a new CSS module for layout styling, and adjusted navbar centering logic. Commented out reset.css in index.html and made minor CSS cleanups.

frontend/src/layouts/HomeLayout.tsx

@@ -9,12 +9,14 @@ const userexists: User = {
   avatarUrl: "",
 };
 
+import styles from "./HomeLayout.module.css";
+
 export default function HomeLayout(){
     return(
-        <>
+        <div className={styles.root}>
             <SiteNav user={userexists} onLogin={() => {}} onLogout={() => {}} />
             <Outlet />
             <Footer />
-        </>
+        </div>
     )
 }