Refactor `validate_allocations`

[knikolla]

The management command validate_allocations has grown significantly in functionality and needs to be refactored for legibility.

One possible approach is to implement a validate function into the allocators, and call that for each of the resource allocations.

[joachimweyl]

@knikolla when do you foresee this work being done and what do you estimate the effort would be?

[knikolla]

@QuanMPhm I unassigned you since I have some spare cycles this sprint and am taking this on myself.

[joachimweyl]

@knikolla what is the status of this issue?

[knikolla]

I have removed this issue from the current sprint as I overestimated my free cycles.