create nikarayan fault model

app/Models/RoadObserved.php

@@ -5,6 +5,7 @@ namespace App\Models;
 use Illuminate\Database\Eloquent\Casts\Attribute;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Database\Eloquent\Relations\MorphToMany;
 use Illuminate\Support\Facades\Storage;
 
@@ -136,4 +137,9 @@ class RoadObserved extends Model
             'mission_id',
         );
     }
+
+    public function nikarayanFaults(): HasMany
+    {
+        return $this->hasMany(NikarayanFault::class);
+    }
 }