feat: add all Eloquent models with relationships

app/Models/Audit.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+class Audit extends Model
+{
+    protected $fillable = ['auditor_id', 'model_type', 'model_id', 'issue_type', 'description', 'status'];
+
+    public function auditor(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'auditor_id');
+    }
+
+    public function responses(): HasMany
+    {
+        return $this->hasMany(AuditResponse::class);
+    }
+
+    public function auditable()
+    {
+        return $this->morphTo(__FUNCTION__, 'model_type', 'model_id');
+    }
+}