What changes were proposed in this pull request?

HDDS-14891. [Website] Integrate prettier.

• Prettier is a powerful formatting tool, so the code style is consistent across the files. It's an industry standard.
• Prettier is configured for formatting the js/jsx/css files currently. It's also possible to use it for markdown, so all the tables/indents are precise, but it interferes with markdownlint. Therefore, I decided not to use for the markdown files.
• It runs by eslint, we simply integrate Prettier as a set of another eslint's linting rules. It's the most popular and convenient pattern.

What is the link to the Apache Jira?

HDDS-14891

How was this patch tested?

Check off which of the following tests were done on this change. If additional testing was done, please elaborate here as well.

• The CI checks on my fork are passing
• I verified the rendered content using a local preview
• I manually verified the steps provided in this change work as described