refactor(esx_mechanicjob): code structure

[ghost]

Description

This PR reorganizes and updates the server-side logic, implementing spam prevention for harvest and craft actions to avoid abuse.

PR Checklist

• My commit messages and PR title follow the Conventional Commits standard.
• My changes have been tested locally and function as expected.
• My PR does not introduce any breaking changes.
• I have provided a clear explanation of what my PR does, including the reasoning behind the changes and any relevant context.

[N0tNvll]

I think is better to create an event called handleTasks or handleActions where you can manage all actions into the same function

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