Add rehype-highlight-code-lines to list of plugins

[talatkuyuk]

Initial checklist

• I read the support docs
• I read the contributing guide
• I agree to follow the code of conduct
• I searched issues and couldn’t find anything (or linked relevant results below)
• If applicable, I’ve added docs and tests

Description of changes

Added a new plugin rehype-highlight-code-lines to list of plugins

https://github.com/ipikuka/rehype-highlight-code-lines
https://www.npmjs.com/package/rehype-highlight-code-lines

It is rehype plugin to add container to each code line in a code block, allowing numbering of the code block and highlighting desired lines of code.

The rehype-highlight-code-lines works with rehype-highlight well; and should be used after rehype-highlight in the plugin chain. The rehype-highlight-code-lines also works with other code highlighters that have no line numbering and line highlighting features.

A snapshot from a working app:

[wooorm]

Thanks!