koord-scheduler: NodeNUMAResource scoring fix and tweak with node-level amplification ratios

[zqzten]

Ⅰ. Describe what this PR does

This is the following-up PR of #1677 fixing its dangling comments. It also does some unification to the node resource amplification apis.

Ⅱ. Does this pull request fix one issue?

part of #1539

Ⅲ. Describe how to verify it

Ⅳ. Special notes for reviews

V. Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in make test

[zqzten]

/cc @eahydra

[codecov]

Codecov Report

Patch coverage: 80.00% and project coverage change: -0.01% ⚠️

Comparison is base (fc26933) 66.12% compared to head (6a20b87) 66.11%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1683      +/-   ##
==========================================
- Coverage   66.12%   66.11%   -0.01%     
==========================================
  Files         384      384              
  Lines       41528    41524       -4     
==========================================
- Hits        27460    27454       -6     
+ Misses      12052    12050       -2     
- Partials     2016     2020       +4     

Flag	Coverage Δ
unittests	66.11% <80.00%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
pkg/scheduler/plugins/nodenumaresource/plugin.go	68.43% <50.00%> (-0.09%)	⬇️
...r/plugins/loadaware/estimator/default_estimator.go	89.55% <100.00%> (ø)
pkg/scheduler/plugins/nodenumaresource/scoring.go	75.15% <100.00%> (-0.46%)	⬇️

... and 3 files with indirect coverage changes

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[eahydra]

/lgtm
/approve

[FillZpp]

/lgtm

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: eahydra, FillZpp

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Needs approval from an approver in each of these files:

• apis/OWNERS [FillZpp]
• pkg/scheduler/OWNERS [eahydra]

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