Allow marking questions as needs review

This allows users to mark questions as in need of review or
refactoring (without invalidating them) which results in a front-end
notice to other users.
Closes #732

Author: levinuss

app/Models/Question.php

@@ -9,7 +9,7 @@ class Question extends Model
 {
     use HasFactory;
 
-    protected $fillable = ['text', 'hint', 'comment', 'correct_answer_id', 'type', 'is_invalid'];
+    protected $fillable = ['text', 'hint', 'comment', 'correct_answer_id', 'type', 'is_invalid', 'needs_review'];
 
     public function answers()
     {

database/migrations/2024_05_19_140943_questions_needs_review_column.php

@@ -0,0 +1,21 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class () extends Migration {
+    public function up(): void
+    {
+        Schema::table('questions', function (Blueprint $table) {
+            $table->boolean('needs_review')->default(false);
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('', function (Blueprint $table) {
+            //
+        });
+    }
+};