planner: move cost factors to core/cost pkg

[AilinKid]

What problem does this PR solve?

Issue Number: ref #51664, ref #52714

Problem Summary:

What changed and how does it work?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No need to test

  • I checked and no code files have been changed.

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[tiprow]

Hi @AilinKid. Thanks for your PR.

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[codecov]

Codecov Report

Attention: Patch coverage is 64.44444% with 16 lines in your changes are missing coverage. Please review.

Project coverage is 74.5817%. Comparing base (c33b6cd) to head (505be23).
Report is 2 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #53120        +/-   ##
================================================
+ Coverage   72.4436%   74.5817%   +2.1381%     
================================================
  Files          1491       1491                
  Lines        429026     429196       +170     
================================================
+ Hits         310802     320102      +9300     
+ Misses        98969      89240      -9729     
- Partials      19255      19854       +599     

Flag	Coverage Δ
integration	49.0874% <55.5555%> (?)
unit	71.3103% <51.1111%> (-0.0235%)	⬇️

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

Components	Coverage Δ
dumpling	53.9957% <ø> (ø)
parser	∅ <ø> (∅)
br	50.4651% <ø> (+9.0382%)	⬆️

[AilinKid]

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[AilinKid]

/test check-dev2

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[AilinKid]

/retest-required

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: guo-shaoge, hawkingrei

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-05-09 08:33:05.685675476 +0000 UTC m=+1123739.442811049: ☑️ agreed by hawkingrei.
• 2024-05-09 09:49:44.816502261 +0000 UTC m=+1128338.573637832: ☑️ agreed by guo-shaoge.

[AilinKid]

/test check-dev2

[tiprow]

@AilinKid: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/test check-dev2

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.