feat: add age requirement field to vacancies, defaulting to 16

Signed-off-by: miguel456 <me@nogueira.codes>

database/migrations/2022_10_23_174610_add_required_age_to_vacancies.php

@@ -0,0 +1,22 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class AddRequiredAgeToVacancies extends Migration
+{
+    public function up()
+    {
+        Schema::table('vacancies', function (Blueprint $table) {
+            $table->integer('requiredAge')->default(16)->after('vacancyStatus');
+        });
+    }
+
+    public function down()
+    {
+        Schema::table('vacancies', function (Blueprint $table) {
+            $table->dropColumn('requiredAge');
+        });
+    }
+}