feat: authentication and authorization tests

[ztest95]

edit: updated this along with their newly updated test req

Test Number	Test Title	Status / Remarks
1-TR-1-TC-1	Users can register with unique email	done
1-TR-1-TC-3	Users cannot register with duplicate email	done
1-TR-2-TC-2	Users can login with correct email and password	done
1-TR-3-TC-1	Users cannot login with incorrect email or password	done
1-TR-3-TC-2	Admins can access admin features	done
1-TR-3-TC-3	Lawyers can access lawyer features	done
1-TR-4-TC-1	Clients can access client features	done

• followed this https://playwright.dev/docs/auth#multiple-signed-in-roles for the auth & updated workflow

[ztest95]

test is failing since last two tests are not yet implemented. idk if i shouldn't have added those tests or add it and just edit it after being implemented

nvm. looks like the updated test requirement doc removes these failing test cases