creat controller ,request and route about damage and fix model

app/Http/Requests/V3/Damage/StoreRequest.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace App\Http\Requests\V3\Damage;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class StoreRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array<string, \Illuminate\Contracts\Validation\ValidationRule|array<mixed>|string>
+     */
+    public function rules(): array
+    {
+        return [
+            'title' =>'required|string|max:255|unique:damages,title',
+            'unit' =>'required|string|max:255',
+            'base_price' =>'required|integer',
+            'status' =>'required|in:0,1',
+        ];
+    }
+}