k6-core compatibility: Use the Goja fork called Sobek

[inancgumus]

What?

• Moving to a Goja fork called Sobek.
• The first PR is produced via an automatic find and replace process. I've also checked the result after doing that, ran the tests, and so on. It seems pretty safe.
• The rest of the PRs partially refactor some parts of the code on a best-effort basis for linter warnings. I've added these additional commits to this same PR because the linter was terribly failing. Since the linter failings due to the same PR's first commit, I've included them in the same PR.

Why?

See:

• Fork the goja project k6#3772
• Moving to a goja fork k6#3773

Checklist

• I have performed a self-review of my code
• I have added tests for my changes
• I have commented on my code, particularly in hard-to-understand areas

Related issue

#1362

[mstoykov]

If you want you can replace the import but keep the name as in import goja "github.com/grafana/sobek"

As otherwise this goes and touches more or less each of your functions which than triggers the linter.

It will still be nice if you go through it and change to sobek at some point - just maybe to not block this PR and to make it a bit ... smaller.

[inancgumus]

@mstoykov

Since we'll eventually do this, I'd like to go with sobek as it's the official name of our Goja fork now, and done with this work once and for all. I'll also fix the linter warnings, as I see this as a good opportunity to get rid of some of them. Thanks for the suggestion :)

[ankur22]

LGTM 🤞 🚀