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>

enterprise/app/controllers/api/v1/accounts/captain/custom_tools_controller.rb

@@ -0,0 +1,49 @@
+class Api::V1::Accounts::Captain::CustomToolsController < Api::V1::Accounts::BaseController
+  before_action :current_account
+  before_action -> { check_authorization(Captain::CustomTool) }
+  before_action :set_custom_tool, only: [:show, :update, :destroy]
+
+  def index
+    @custom_tools = account_custom_tools.enabled
+  end
+
+  def show; end
+
+  def create
+    @custom_tool = account_custom_tools.create!(custom_tool_params)
+  end
+
+  def update
+    @custom_tool.update!(custom_tool_params)
+  end
+
+  def destroy
+    @custom_tool.destroy
+    head :no_content
+  end
+
+  private
+
+  def set_custom_tool
+    @custom_tool = account_custom_tools.find(params[:id])
+  end
+
+  def account_custom_tools
+    @account_custom_tools ||= Current.account.captain_custom_tools
+  end
+
+  def custom_tool_params
+    params.require(:custom_tool).permit(
+      :title,
+      :description,
+      :endpoint_url,
+      :http_method,
+      :request_template,
+      :response_template,
+      :auth_type,
+      :enabled,
+      auth_config: {},
+      param_schema: [:name, :type, :description, :required]
+    )
+  end
+end