Removed qs

[gkiely]

Based off this comment
#2038 (comment)

Includes a lightweight alternative to qs.stringify that can run in worker environments.
I have added 80% of the tests from the qs library, if you think this is a good approach I can add the remainder. I wanted to confirm it is viable before I put any more time into it :)

[CLAassistant]

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[helenye-stripe]

Hi @gkiely. Thanks a lot for this PR! We would really appreciate if you could continue your work here 💯

[chenglou]

Seems like the only failures are prettier-related?

[prathmesh-stripe]

@chenglou Our CI pipeline does not run the test suite until build failures are resolved first. We are waiting for @gkiely to make progress on this and add rest of the tests that they intend to add in this PR.