Enhance role management by adding pricing fields and updating related logic

- Updated `CreateRoleCommand` and `UpdateRoleCommand` to include optional pricing fields: `PricePerConfigPerQuarter` and `PricePerConfigPerYear`.
- Modified `RoleEndpoints` to handle the new pricing parameters during role creation and updates.
- Enhanced validation logic in `CreateRoleCommandValidator` and `UpdateRoleCommandValidator` to ensure pricing fields are non-negative when provided.
- Updated `RoleDto` and `SelectableRoleDto` to include pricing information, ensuring proper data handling in API responses.
- Adjusted frontend components to support new pricing fields in role forms and display total costs based on configurations.
- Updated API documentation to reflect changes in role management endpoints and pricing structure.

backend/src/PnvPanel.Application/Admin/Support/ApproveRoleRequestCommandHandler.cs

@@ -49,6 +49,8 @@ public sealed class ApproveRoleRequestCommandHandler(
                 ticket.ProposedRoleName!,
                 ticket.ProposedMaxConfigs!.Value,
                 ticket.ProposedMaxIpLimit!.Value,
+                pricePerConfigPerQuarter: null,
+                pricePerConfigPerYear: null,
                 cancellationToken
             );
             if (!createResult.IsSuccess)