[Partial] Auth setup part 3/n

[aahnik]

This pull request includes significant updates to the authentication system, database schema, and user interface components. The changes introduce new API routes for login, logout, and registration, update the database schema, and add a new unauthorized access page.

Authentication System Updates:

• app/api/auth/login/route.ts: Added a new POST route for user login, including validation, password verification, and session token generation.
• app/api/auth/logout/route.ts: Added a new DELETE route for user logout, including session invalidation and cookie deletion.
• app/api/auth/register/route.ts: Added a new POST route for user registration, including validation, password hashing, and session token generation.

Database Schema Updates:

• db/schema.ts: Updated the users table to include email with a unique constraint and removed the userEmails table. Fixed formatting issues in multiple table definitions. [1] [2] [3] [4] [5] [6] [7] [8]

User Interface Components:

• contexts/auth-context.tsx: Created an authentication context with login, signup, and logout methods, and a provider component to manage authentication state.
• mint/unauthorized.tsx: Added a new unauthorized access page with a logout button and a message for users without permission.
• app/unauth/page.tsx: Created a new page that renders the UnauthorizedPage component.

Utility Functions:

• lib/client/fetch.ts: Added a utility function fetchApi to handle API calls with proper headers and error handling.
• lib/server/cookies.ts: Added functions to set and delete session token cookies.

Additional Changes:

• lib/validations.ts: Added validation schemas for login and registration data.
• package.json: Added the oslo package for password hashing.