feat: Initial commit for Saqel Platform architecture, backend, Docker, and documentation

backend/app/Models/QuestionOption.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class QuestionOption extends Model
+{
+    protected $fillable = ['question_id', 'body', 'is_correct'];
+
+    protected $casts = [
+        'is_correct' => 'boolean',
+    ];
+
+    public function question(): BelongsTo
+    {
+        return $this->belongsTo(Question::class);
+    }
+}