Add a noir.destroy() method to noir_js

[signorecello]

Problem

We're allocating resources everytime we call noir.init(). These will build up specially if state isn't managed correctly in the frontend.

Happy Case

Add a noir.destroy() to shut down the backend to avoid using too many resources. This essentially will just call the upstream backend.destroy() method, which in the case of bb.js it's exactly how it's called

Alternatives Considered

No response

Additional Context

No response

Would you like to submit a PR for this Issue?

No

Support Needs

No response

[Savio-Sou]

Closed with #3105.