add alersts api

app/Models/Alert.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class Alert extends Model
+{
+    use HasFactory;
+
+    /**
+     * Casts
+     */
+    protected $casts = [
+        'seen_at' => 'datetime'
+    ];
+
+    /**
+     * User
+     */
+    public function user(): BelongsTo
+    {
+        return $this->belongsTo(User::class);
+    }
+}