added crypto pm and activation key system

app/Models/ActivationKey.php

@@ -0,0 +1,46 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class ActivationKey extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'user_id',
+        'activation_key',
+        'price_id',
+        'is_activated',
+    ];
+
+    protected $casts = [
+        'is_activated' => 'boolean',
+    ];
+
+    /**
+     * Relationship: the user who redeemed the activation key (optional).
+     */
+    public function user()
+    {
+        return $this->belongsTo(User::class);
+    }
+
+    /**
+     * Scope to filter unactivated keys
+     */
+    public function scopeUnactivated($query)
+    {
+        return $query->where('is_activated', false);
+    }
+
+    /**
+     * Scope to filter activated keys
+     */
+    public function scopeActivated($query)
+    {
+        return $query->where('is_activated', true);
+    }
+}