Added quiz features

app/Models/Question.php

@@ -0,0 +1,46 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Question extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'quiz_id',
+        'subject_id',
+        'question_text',
+        'type',
+        'score',
+        'solution_explanation',
+        'order',
+    ];
+
+    protected $casts = [
+        'score' => 'float',
+        'order' => 'integer',
+    ];
+
+    public function quiz()
+    {
+        return $this->belongsTo(Quiz::class, 'quiz_id');
+    }
+
+    public function subject()
+    {
+        return $this->belongsTo(QuizSubject::class, 'subject_id');
+    }
+
+    public function options()
+    {
+        return $this->hasMany(QuestionOption::class, 'question_id');
+    }
+
+    public function userAnswers()
+    {
+        return $this->hasMany(UserQuizAnswer::class, 'question_id');
+    }
+}