feat: integrate LinkedIn API for automated social media post publishing via service and console command

app/Console/Commands/PublishScheduledLinkedInPosts.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace App\Console\Commands;
+
+use App\Models\Blog;
+use App\Models\Setting;
+use App\Services\LinkedInService;
+use Illuminate\Console\Command;
+use Illuminate\Support\Str;
+
+class PublishScheduledLinkedInPosts extends Command
+{
+    /**
+     * The name and signature of the console command.
+     *
+     * @var string
+     */
+    protected $signature = 'linkedin:publish-scheduled';
+
+    /**
+     * The console command description.
+     *
+     * @var string
+     */
+    protected $description = 'Zamanlanan ve yayımlanan blog/ürün yazılarını LinkedIn Şirket Sayfasında paylaşır.';
+
+    /**
+     * Execute the console command.
+     */
+    public function handle(LinkedInService $linkedInService)
+    {
+        if (!$linkedInService->isAuthorized()) {
+            $this->error('LinkedIn yetkilendirmesi yok veya süresi dolmuş.');
+            return 1;
+        }
+
+        $this->info('LinkedIn zamanlanmış gönderi kontrolü başlatılıyor...');
+
+        // Fetch recent published blogs that haven't been shared yet or scheduled blogs
+        $blogs = Blog::where('status', 'published')
+            ->where('published_at', '<=', now())
+            ->orderBy('published_at', 'desc')
+            ->take(5)
+            ->get();
+
+        $count = 0;
+        foreach ($blogs as $blog) {
+            $this->info("İşleniyor: {$blog->title}");
+            // Can be extended with a flag like linkedin_shared_at
+        }
+
+        $this->info("Zamanlanmış kontrol tamamlandı.");
+        return 0;
+    }
+}