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.

docs/api-design.md

@@ -244,8 +244,8 @@ reject/approve владением тикета не ограничены. Еди
 | POST   | `/api/admin/activation-requests/{id}/approve`   | admin | —                        | `204 No Content` |
 | POST   | `/api/admin/activation-requests/{id}/reject`    | admin | `{ reason? }`            | `204 No Content` |
 | GET    | `/api/admin/roles`                              | admin | —                        | `RoleDto[]` |
-| POST   | `/api/admin/roles`                              | admin | `{ name, maxConfigs, maxIpLimit }` | `RoleDto` |
-| PUT    | `/api/admin/roles/{id}`                         | admin | `{ maxConfigs, maxIpLimit }` | `RoleDto` |
+| POST   | `/api/admin/roles`                              | admin | `{ name, maxConfigs, maxIpLimit, pricePerConfigPerQuarter?, pricePerConfigPerYear? }` | `RoleDto` |
+| PUT    | `/api/admin/roles/{id}`                         | admin | `{ maxConfigs, maxIpLimit, pricePerConfigPerQuarter?, pricePerConfigPerYear? }` | `RoleDto` (для `admin` цена игнорируется, остаётся `null`) |
 | DELETE | `/api/admin/roles/{id}`                         | admin | —                        | `204 No Content` (системные `admin`/`user` удалить нельзя) |
 | PATCH  | `/api/admin/users/{id}/role`                    | admin | `{ roleId }`             | `204 No Content` (`409 Roles.CannotRemoveLastAdmin`, если у цели сейчас `admin`, новая роль другая, и это единственный админ) |