feat: login page

[gauravsinhaweb]

Issue / ticket

• create login page for tiny site #16

Tests covered __test__/pages/login

• should render without throwing an error
• should render username input
• should render password input
• should render the Login button
• should accept a valid username that takes only alphanumeric characters and underscore
• should not accept an invalid username that doesn't take only alphanumeric characters and underscore

Recording.2023-09-29.115055.mp4

[j24m]

Looks good to merge.