Add Job Export

[KamuiKody]

this adds an export to add jobs to city hall. I found this convenient since qbcore allows for exports to import jobs. This would allow more outside resources to be easily drag and drop. This adds qb-cityhall as a dependency for anything that calls the export. There is also a check added to see if the job already exists in the table or not. I have tested this a couple times and havent found any issues with it thus far.

Questions (please complete the following information):

• Have you personally loaded this code into an updated qbcore project and checked all it's functionality? [yes] (Be honest)
• Does your code fit the style guidelines? [yes]
• Does your PR fit the contribution guidelines? [yes]

[GhzGarage]

This looks useful but i think there's more to adding the job than just this

[KamuiKody]

There was an update to make it so you dont have to change half the file anymore to add a job which allows for this to work the way it does