Self-service categories: GitOps

[iansltx]

[iansltx]

Hey team! Please add your planning poker estimate with Zenhub @jahzielv @ksykulev

[jmwatts]

QA Notes

• [x] Custom package can be added, made available in Self-service, and have a category assigned
• [x] Categories can be changed or removed via GitOps for custom package
• [x] VPP can be added, made available in Self-service, and have a category assigned
• [x] Categories can be changed or removed via GitOps for VPP app
• [x] FMA can be added, made available in Self-service, and have a category assigned
• [x] Categories can be changed for FMA (they can not be removed, they will be reset to default values if no category is assigned, but this is by design)

[fleet-release]

In GitOps, we trust, Ease in fleet's vast cloud city, Calm as drifting dust.