feat: add custom objectId by providing newObjectIdCallback from server config

[JasCodes]

Features

• Add custom objectId by providing newObjectIdCallback from server config.

• [x] I am not disclosing a vulnerability.
• [x] I am creating this PR in reference to an issue.

Issue Description

Related issue:

• Fixes #7830

Approach

TODOs before merging

• [ ] Add tests
• [ ] Add changes to documentation (guides, repository pages, in-code descriptions)

[parse-github-assistant[bot]]

I will reformat the title to use the proper commit message syntax.

[JasCodes]

@mtrezza Can you approve workflows?

[parse-github-assistant[bot]]

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[mtrezza]

Sure, we can run the workflow, but we do this usually as the last steps to ensure your code works in all supported environments. Until the PR is ready, you can run the tests locally in your local environment to see whether they pass. That's also faster during development, as you can choose to run only your own tests that you add as part of this PR.

This PR still needs:

• Tests, see existing tests in /spec folder for guidance
• Adding the new Parse server option, see Contribution Guide for the necessary steps