Add admin dashboard data loading & package dependencies

Removed 'admin-header.tsx' and 'admin-sidebar.tsx' components and added 'admin-dashboard.loader.ts' to handle loading data for the admin dashboard. Updated 'admin-dashboard.tsx' and 'page.tsx' to use this loader. Package dependencies were also updated in 'pnpm-lock.yaml' and 'package.json' files of relevant packages. This commit prioritizes loading dashboard data effectively and managing package dependencies.

packages/features/admin/src/lib/server/loaders/admin-dashboard.loader.ts

@@ -0,0 +1,51 @@
+import { getSupabaseServerComponentClient } from '@kit/supabase/server-component-client';
+
+export async function loadAdminDashboard(params?: {
+  count: 'exact' | 'estimated' | 'planned';
+}) {
+  const count = params?.count ?? 'estimated';
+  const client = getSupabaseServerComponentClient({ admin: true });
+
+  const selectParams = {
+    count,
+    head: true,
+  };
+
+  const subscriptionsPromise = client
+    .from('subscriptions')
+    .select('*', selectParams)
+    .eq('status', 'active')
+    .then((response) => response.count);
+
+  const trialsPromise = client
+    .from('subscriptions')
+    .select('*', selectParams)
+    .eq('status', 'trialing')
+    .then((response) => response.count);
+
+  const accountsPromise = client
+    .from('accounts')
+    .select('*', selectParams)
+    .eq('is_personal_account', true)
+    .then((response) => response.count);
+
+  const teamAccountsPromise = client
+    .from('accounts')
+    .select('*', selectParams)
+    .eq('is_personal_account', false)
+    .then((response) => response.count);
+
+  const [subscriptions, trials, accounts, teamAccounts] = await Promise.all([
+    subscriptionsPromise,
+    trialsPromise,
+    accountsPromise,
+    teamAccountsPromise,
+  ]);
+
+  return {
+    subscriptions,
+    trials,
+    accounts,
+    teamAccounts,
+  };
+}