refactor(server/player): refactor job/gang management API responses

[jellyton255]

Description

The current jobs/gang update API was discussed in Discord, these are my proposed changes for the API. It's the same format that ox_inventory uses for several functions (https://overextended.dev/ox_inventory/Functions/Server#additem) and based on my experience it's the most straightforward way of handling failed calls.

Checklist

• [ ] I have personally loaded this code into an updated Qbox project and checked all of its functionality.
• [X] My pull request fits the contribution guidelines & code conventions.

[Manason]

Closing in favor of https://github.com/Qbox-project/qbx_core/pull/469 which does the same thing