[Feature] Intergrate Clerk auth to app

[RashJrEdmund]

Rebased to main branch and Intergrated clerk authentication.

• [x] Installed @clerk/nextjs
• [x] Created and added env variables to .env.local file. (Created a copy with no sensitive data as .env.example)
• [x] Setup Clerk configs in NextJs ./src/middleware.ts file.
• [x] Added profile route where I rendered the Clerk UserButton component Also used Clerk components and auth api from "@clerk/nextjs/server" to check for user and render the appropiate UI. Server rendered components and added a profile routes too

Resolves #9