creat controller ,request and route about damage and fix model

app/Models/Damage.php

@@ -2,15 +2,18 @@
 
 namespace App\Models;
 
+use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 
 class Damage extends Model
 {
-    
-    protected $fillable = [
-        'damage_id',
-    ];
-    public function accidents()
+    use HasFactory;
+
+    public $timestamps = false;
+
+    protected $guarded = [];
+    public function accidents(): BelongsToMany
     {
         return $this->belongsToMany('App\Accident');
     }