Sweep: Add a store to store user information to create an onboarding flow

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Description

This pull request introduces a centralized store for managing user information, facilitating an improved onboarding flow. By leveraging the Pinia library, we've encapsulated user data fetching and state management logic within a dedicated store, streamlining data access across components.

Summary

• Added a new userStore using Pinia in frontend/components/userStore.ts to manage user state globally.
• Implemented fetchUserData action within the store to asynchronously fetch user data from the backend and update the store state.
• Modified frontend/app.vue to fetch user data on component mount using the newly created userStore.
• Refactored frontend/pages/profile.vue to utilize the userStore for user data instead of fetching and managing its own state, simplifying the component logic and ensuring a single source of truth for user data.
• Utilized computed properties in frontend/pages/profile.vue to reactively display user information, enhancing UI consistency and responsiveness.

This change not only simplifies state management across the application but also lays foundational work for further enhancements to the user onboarding process and overall user experience.

Fixes #36.

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Rollback Files For Sweep

• Rollback changes to frontend/components/userStore.ts
• Rollback changes to frontend/pages/profile.vue
• Rollback changes to frontend/app.vue

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