Add Test for statusCodeCard

[M0nica]

• Use the react-testing-library https://testing-library.com/docs/react-testing-library/intro
• Write a unit test for statusCodeCard that ensures that the statusCodeCard when the status code for 100 contains an image link to images/100.gif and links to https://httpstatuses.com/100

https://github.com/M0nica/httriri/blob/main/components/statusCodeCard.tsx

[eLeontev]

@M0nica hi, I prepared the PR for testing the component with usage of proposed library please perform the review.