feature: Add User Information Modal when click on any user

[shivang-16]

Acceptance Criteria fulfillment

• [x] Developed the UI of user-info modal.
• [x] Successfully fetches userinfo data from the API and integrated it into the modal.

Fixes #433

Video/Screenshots

https://github.com/RocketChat/EmbeddedChat/assets/125182653/706394a3-0dd0-4b14-900e-b034a7260643