WIP: Serialize sidekiq args - Proof of Concept

What does this MR do?

MASSIVELY INCOMPLETE MR - JUST AN IDEA FOR AN APPROACH TO TAKE

General Issue: Queueing jobs with sidekiq causes the passed arguments to be json-ified. Currently, we're working around that behavior in a variety of places & in different ways. It would be better to handle this holistically - serializing parameters in a consistent way.

Ideally, we should be able to pass ActiveRecord objects, ruby DateTime objects, Hashes, etc to delayed job workers & expect to receive comparable objects as actionable arguments, rather an a string version which needs to be otherwise manipulated.

Related Issues & MRs

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/59955

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation created/updated or follow-up review issue created
• Code review guidelines
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Performance and testing

• Tests added for this feature/bug
• Tested in all supported browsers
• End to end tests added if this MR has ~"Requires e2e tests" label

Security

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• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
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