Add countries and regions

app/Models/Continent.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+class Continent extends Model
+{
+    protected $fillable = [
+        'code',
+        'name',
+        'internal_name',
+    ];
+
+    public function countries(): HasMany
+    {
+        return $this->hasMany(Country::class);
+    }
+
+    public function regions(): HasMany
+    {
+        return $this->hasMany(Region::class);
+    }
+}