Update dependencies and configuration for Laravel project; added Filament support, modified .gitignore, and adjusted welcome page links.

app/Models/Group.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+
+class Group extends Model
+{
+    use HasFactory;
+
+    public function pilgrims(): HasMany
+    {
+        return $this->hasMany(Pilgrim::class);
+    }
+}