Add object level form to role creation (#12826)

## Context
- Add object-level form to role creation
- Add isSaving props for save button isLoading state
<img width="594" alt="Screenshot 2025-06-24 at 15 03 59"
src="https://github.com/user-attachments/assets/77d9d399-4e1a-4e35-be45-c19100ef06c1"
/>

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Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-server/src/engine/metadata-modules/role/role.service.ts

@@ -67,6 +67,7 @@ export class RoleService {
     await this.validateRoleInputOrThrow({ input, workspaceId });
 
     const role = await this.roleRepository.save({
+      id: input.id,
       label: input.label,
       description: input.description,
       icon: input.icon,