Add a learn article explaining HTTP status code

[raghavexe]

Description

A new article for HTTP explaining various HTTP status codes

Validation

article is located on the learn page under the http header. Article name: "Understanding HTTP Status Codes"

Related Issues

Check List

• [X ] I have read the Contributing Guidelines and made commit messages that follow the guideline.
• [X ] I have run pnpm format to ensure the code follows the style guide.
• [X ] I have run pnpm test to check if all tests are passing.
• [ X] I have run pnpm build to check if the website builds without errors.
• [ X] I've covered new added functionality with unit tests if necessary.