feat: add teams (#848)

## Description

Add support for teams which will allow users to collaborate on
documents.

Teams features allows users to:

- Create, manage and transfer teams
- Manage team members
- Manage team emails
- Manage a shared team inbox and documents

These changes do NOT include the following, which are planned for a
future release:

- Team templates
- Team API
- Search menu integration

## Testing Performed

- Added E2E tests for general team management
- Added E2E tests to validate document counts

## Checklist

- [X] I have tested these changes locally and they work as expected.
- [X] I have added/updated tests that prove the effectiveness of these
changes.
- [ ] I have updated the documentation to reflect these changes, if
applicable.
- [X] I have followed the project's coding style guidelines.

apps/web/src/app/(teams)/t/[teamUrl]/error.tsx

@@ -0,0 +1,54 @@
+'use client';
+
+import Link from 'next/link';
+import { useRouter } from 'next/navigation';
+
+import { ChevronLeft } from 'lucide-react';
+
+import { AppErrorCode } from '@documenso/lib/errors/app-error';
+import { Button } from '@documenso/ui/primitives/button';
+
+type ErrorProps = {
+  error: Error & { digest?: string };
+};
+
+export default function ErrorPage({ error }: ErrorProps) {
+  const router = useRouter();
+
+  let errorMessage = 'Unknown error';
+  let errorDetails = '';
+
+  if (error.message === AppErrorCode.UNAUTHORIZED) {
+    errorMessage = 'Unauthorized';
+    errorDetails = 'You are not authorized to view this page.';
+  }
+
+  return (
+    <div className="mx-auto flex min-h-[80vh] w-full items-center justify-center py-32">
+      <div>
+        <p className="text-muted-foreground font-semibold">{errorMessage}</p>
+
+        <h1 className="mt-3 text-2xl font-bold md:text-3xl">Oops! Something went wrong.</h1>
+
+        <p className="text-muted-foreground mt-4 text-sm">{errorDetails}</p>
+
+        <div className="mt-6 flex gap-x-2.5 gap-y-4 md:items-center">
+          <Button
+            variant="ghost"
+            className="w-32"
+            onClick={() => {
+              void router.back();
+            }}
+          >
+            <ChevronLeft className="mr-2 h-4 w-4" />
+            Go Back
+          </Button>
+
+          <Button asChild>
+            <Link href="/settings/teams">View teams</Link>
+          </Button>
+        </div>
+      </div>
+    </div>
+  );
+}