add stories to roles components (#10503)

## Context
Adding stories for roles components. Also moving modules components to
the proper "modules" folder, "pages" folder being only for entry points.

## Test
Run storybook

<img width="1145" alt="Screenshot 2025-02-26 at 13 40 40"
src="https://github.com/user-attachments/assets/bc184ab0-c590-4362-8c5a-1bf5ef176e6c"
/>
<img width="1149" alt="Screenshot 2025-02-26 at 13 40 32"
src="https://github.com/user-attachments/assets/699cd205-31db-45e9-b9c1-caff1832bd47"
/>
<img width="1153" alt="Screenshot 2025-02-26 at 13 40 11"
src="https://github.com/user-attachments/assets/72e45a67-ea89-4999-8b16-6f7d027d07f6"
/>
<img width="471" alt="Screenshot 2025-02-26 at 13 38 16"
src="https://github.com/user-attachments/assets/62676943-9935-42b5-b769-5544f7eed85f"
/>
<img width="472" alt="Screenshot 2025-02-26 at 13 38 12"
src="https://github.com/user-attachments/assets/946baab9-1be4-439e-bf99-0ebeab0995f7"
/>

packages/twenty-front/src/modules/workspace-member/types/WorkspaceMember.ts

@@ -15,7 +15,7 @@ export type WorkspaceMember = {
   };
   avatarUrl?: string | null;
   locale: string | null;
-  colorScheme?: ColorScheme;
+  colorScheme: ColorScheme;
   createdAt: string;
   updatedAt: string;
   userEmail: string;