Introducing crypto section since WebCrypto module has been promoted

[olegbespalov]

What?

This PR introduces a new crypto section of JavaScript API since the k6/experimental/webcrypto has been promoted and now available globally (grafana/k6#4278). It also announces the deprecation of the k6/experimental/webcrypto.

Checklist

• I have used a meaningful title for the PR.
• I have described the changes I've made in the "What?" section above.
• I have performed a self-review of my changes.
• I have run the npm start command locally and verified that the changes look good.

• I have made my changes in the docs/sources/k6/next folder of the documentation.

Related PR(s)/Issue(s)

[olegbespalov]

Note that it's logically OK that new run-code-blocks fails on the k6 v0.56. crypto will be available only after v1.0.0-rc (which is not published)

[heitortsergent]

This is a big one! Left just a couple of small comments, thanks for updating all these pages. 🙇

[olegbespalov]

@heitortsergent the run examples workflow still failing (and will fail until we release the new version). Are we fine with merging this PR?

[heitortsergent]

@olegbespalov maybe we can wait until we're ready for the release next week to merge this PR? I know it's not ideal, I think we'll have to figure out a better way to handle the examples workflow for the next release. 😞

[codebien]

I don't see content added here mentioned in the release notes, so we can just wait the next week after the release, then merge when the new release has been published. I can take care of it.

I open the new pull request for adding the new folder. @olegbespalov then we can rebase this pull request on top of it, WDYT?

[olegbespalov]

Thanks @codebien !

[codebien]

@olegbespalov here we are #1908