Add tests for Login & SignUp functionality of the Supabase backend

[TVW96]

Summary & Changes 📃

• Resolves: Add tests for Login & SignUp functionality of the Supabase backend #182

• Summary: (Briefly describe what this PR does)

  • 🔨 What does this issue fix?
  • With the PR we can test the login and signup functionality for the Shift App. Prior we were not able to successfully sign up for a user account and then login to the previously created account. There was no logic for storing user profiles in the backend of the project. Completing this PR will add: (1) Package dependencies for testing the backend features of the application using the UI components. (2) LoginPage.test.tsx. (3) SignUpPage.test.tsx.
  • 👀 What is the expected behavior?
  • Developers can run test and all test will succeed. Users will be able to signup for app account and login into to that profile accessing the main features of the app.

• What are the changes made?

  1. Create test files for login and signup page.
  2. Edit RLS policy for profiles table to accept inserts from users with NULL auth.uid().
  3. Remove manual profile tables insertion from signup page utilizing supabase trigger function.
  4. Create proper database typing in getQueries, this included writing a script for automatically loading the database.ts file in @/types. Loading @types/database file run npm run db:types in VScode terminal.

How to Test 🧪

1. Steps to Reproduce:
   • Step 1: npx jest LoginPage.test.tsx
   • Step 2: npx jest SignUpPage.test.tsx
2. Expected Behavior: (Describe what should happen)
   Tests are green 🍏
3. Actual Behavior (if bug): (Describe what happens instead)
   Test will fail 🧯

Checklist ✅

• I have tested this PR locally and it works as expected.
• This PR resolves an issue (Resolves #issue-number).
• Reviewers, assignees(self), tags, and labels are correctly assigned.
• Squash commits and enable auto-merge if approved.