Implement Owner Panel features and maintenance mode handling

- Introduced the Owner Panel with new routes and UI components for managing guilds, user blacklists, feature flags, and bot presence.
- Added maintenance mode functionality to prevent non-owner users from executing commands during maintenance periods.
- Enhanced localization with new keys for Owner Panel features in both English and German.
- Updated job processing to include a presence refresh job, ensuring the bot's status is regularly updated.
- Improved environment configuration to support owner user IDs for access control.

apps/webui/src/app/owner/team/page.tsx

@@ -0,0 +1,21 @@
+import { TeamManager } from '@/components/owner/owner-forms';
+import { env } from '@/lib/env';
+import { getLocale, t } from '@/lib/i18n';
+import { prisma } from '@/lib/prisma';
+
+export default async function OwnerTeamPage() {
+  const [locale, members] = await Promise.all([
+    getLocale(),
+    prisma.ownerTeamMember.findMany({ orderBy: { createdAt: 'asc' } })
+  ]);
+
+  return (
+    <div className="space-y-6">
+      <div>
+        <h1 className="text-2xl font-semibold">{t(locale, 'owner.team.title')}</h1>
+        <p className="text-sm text-muted-foreground">{t(locale, 'owner.team.subtitle')}</p>
+      </div>
+      <TeamManager bootstrapOwnerIds={env.OWNER_USER_IDS ?? []} initialMembers={members} />
+    </div>
+  );
+}