Share common types between Autoscaler versions

[vboulineau]

What does this PR do?

Share common types between Autoscaler versions to avoid useless conversions.

Motivation

Additional Notes

Minimum Agent Versions

Describe your test plan

Checklist

• PR has at least one valid label: bug, enhancement, refactoring, documentation, tooling, and/or dependencies
• PR has a milestone or the qa/skip-qa label

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 51.09%. Comparing base (b8dad05) to head (c080ec7).
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1663      +/-   ##
==========================================
+ Coverage   49.49%   51.09%   +1.59%     
==========================================
  Files         218      218              
  Lines       21244    22667    +1423     
==========================================
+ Hits        10515    11582    +1067     
- Misses      10182    10480     +298     
- Partials      547      605      +58     

Flag	Coverage Δ
unittests	51.09% <ø> (+1.59%)	⬆️

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see 77 files with indirect coverage changes

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[tbavelier]

just a nit on possibly defining solely uint64pointer while relying on other existing utils