docs: add rev-dep to qa tools

[jayu]

Checklist:

• I've read and understood Contributing Guidelines.
• I've added the new resource at the end of its section.
• This resource is out there for a while, and actively maintained.
• This resource is popular enough and has at least a few hundred stars on GitHub.

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Hi, I would like to add my tool rev-dep. It's dependency analysis and optimization toolkit for modern JavaScript and TypeScript projects.

It can be used to trace imports, identify circular dependencies, find unused code, clean node modules.

I've recently reimplemented the tool in Go, which made it very fast, much faster than alternatives.

It's not yet popular, but I believe lists like this one are one of the ways to make such tool popular and adopted by many.