Add complete Laravel LLM Gateway implementation

Core Features:
- Multi-provider support (OpenAI, Anthropic, DeepSeek, Gemini, Mistral)
- Provider service architecture with abstract base class
- Dynamic model discovery from provider APIs
- Encrypted per-user provider credentials storage

Admin Interface:
- Complete admin panel with Livewire components
- User management with CRUD operations
- API key management with testing capabilities
- Budget system with limits and reset schedules
- Usage logs with filtering and CSV export
- Model pricing management with cost calculator
- Dashboard with Chart.js visualizations

Database Schema:
- MariaDB migrations for all tables
- User provider credentials (encrypted)
- LLM request logging
- Budget tracking and rate limiting
- Model pricing configuration

API Implementation:
- OpenAI-compatible endpoints
- Budget checking middleware
- Rate limit enforcement
- Request logging jobs
- Cost calculation service

Testing:
- Unit tests for all provider services
- Provider factory tests
- Cost calculator tests

Documentation:
- Admin user seeder
- Model pricing seeder
- Configuration files

laravel-app/create-admin.php

@@ -0,0 +1,31 @@
+<?php
+
+// Create Admin User Script
+require __DIR__.'/vendor/autoload.php';
+
+$app = require_once __DIR__.'/bootstrap/app.php';
+$kernel = $app->make(Illuminate\Contracts\Console\Kernel::class);
+$kernel->bootstrap();
+
+use App\Models\User;
+use Illuminate\Support\Facades\Hash;
+
+try {
+    $user = User::firstOrCreate(
+        ['email' => 'admin@example.com'],
+        [
+            'name' => 'Admin User',
+            'password' => Hash::make('password'),
+            'email_verified_at' => now(),
+        ]
+    );
+
+    echo "\n✅ User created successfully!\n";
+    echo "📧 Email: admin@example.com\n";
+    echo "🔑 Password: password\n";
+    echo "👤 Name: {$user->name}\n";
+    echo "🆔 ID: {$user->id}\n\n";
+    
+} catch (Exception $e) {
+    echo "\n❌ Error: " . $e->getMessage() . "\n\n";
+}