feat: formatting of code snippet

[sgammon]

Summary

This changeset fixes formatting of the Bazel module code snippet, and adds syntax highlighting with Prism. Additionally, the snippet can be customized to show as a dev_dependency.

Before:	After:

When the Customize this snippet area is expanded, controls are revealed. Checking the dev_dependency box updates the snippet accordingly:

Changelog

• feat: add controls for code snippet customization
• feat: add dev_dependency code snippet control
• feat: add syntax highlighting in CopyCode component
• fix: linebreak formatting in code snippet
• chore: add prism and prism-themes dependencies

[sgammon]

@hobofan thank you for the review :) will fix