Cloudflare Worker support - avoid using 'crypto' from Node

[Code6226]

Just used wrangler locally to try the Cloudflare Worker support. I know a lot has been done recently to add support for non-Node JS environments.

Tried it at this commit from yesterday:
1c2e183

Here's the last thing I'm running into:

    src/util/server-sdk-js-main/dist/WebhookReceiver.js:1:19:
      1 │ import crypto from 'crypto';                       
        ╵                    ~~~~~~~~

  The package "crypto" wasn't found on the file system but is built into node.

They recommend the Web Crypto API: https://developers.cloudflare.com/workers/runtime-apis/web-crypto

After just commenting that code out locally, it was able to generate a JWT while running in wrangler - so I think this is the last thing left. Thanks!

[lukasIO]

Thanks for raising this issue! We'll address this in #122