Customizable Code Blocks

[nparashar150]

Describe the issue
Code blocks are not customizable in terms of syntax highlighting or styling. Currently, the system doesn't support applying custom classes or syntax highlighting to code blocks.

Expected behavior
Users should be able to apply custom classes to code blocks, with options for syntax highlighting using libraries like Prism.js.

Additional context
Users should be able to specify code languages like js, html, etc., for syntax highlighting and style customization.