feat: Add UI for custom tools (#12585)

### Tools list

<img width="2316" height="666" alt="CleanShot 2025-10-03 at 20 42 41@2x"
src="https://github.com/user-attachments/assets/ccbffd16-804d-4eb8-9c64-2d1cfd407e4e"
/>

### Tools form 

<img width="2294" height="2202" alt="CleanShot 2025-10-03 at 20 43
05@2x"
src="https://github.com/user-attachments/assets/9f49aa09-75a1-4585-a09d-837ca64139b8"
/>

## Response

<img width="800" height="2144" alt="CleanShot 2025-10-03 at 20 45 56@2x"
src="https://github.com/user-attachments/assets/b0c3c899-6050-4c51-baed-c8fbec5aae61"
/>

---------

Co-authored-by: Pranav <pranavrajs@gmail.com>
Co-authored-by: Pranav <pranav@chatwoot.com>

config/locales/en.yml

@@ -336,6 +336,8 @@ en:
       processing_pages: 'Processing pages %{start}-%{end} (iteration %{iteration})'
       chunk_generated: 'Chunk generated %{chunk_faqs} FAQs. Total so far: %{total_faqs}'
       page_processing_error: 'Error processing pages %{start}-%{end}: %{error}'
+    custom_tool:
+      slug_generation_failed: 'Unable to generate unique slug after 5 attempts'
   public_portal:
     search:
       search_placeholder: Search for article by title or body...

config/routes.rb

@@ -67,6 +67,7 @@ Rails.application.routes.draw do
             resources :copilot_threads, only: [:index, :create] do
               resources :copilot_messages, only: [:index, :create]
             end
+            resources :custom_tools
             resources :documents, only: [:index, :show, :create, :destroy]
           end
           resource :saml_settings, only: [:show, :create, :update, :destroy]