fix(frontend): move share page logo to top right and link to login

- Move AutoGPT logo from top left to top right in the header
- Change logo link to /login page (redirects to library if signed in,
  signup if new user)

autogpt_platform/frontend/src/app/(no-navbar)/share/layout.tsx

@@ -16,8 +16,8 @@ export default function ShareLayout({
   return (
     <div className="min-h-screen bg-background">
       <header className="border-b border-border bg-background">
-        <div className="container mx-auto px-4 py-4">
-          <Link href="/" className="inline-block">
+        <div className="container mx-auto flex justify-end px-4 py-4">
+          <Link href="/login" className="inline-block">
             <Image
               src="/autogpt-logo-dark-bg.png"
               alt="AutoGPT"