Service to find seat availability for service account

What does this MR do and why?

MR to apply Tiering to Service Account allocation

Solves #417297 (closed)

Screenshots

API call to create service accounts when license is valid

API call to create service accounts when license is not valid

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.