execdetails: Display vector search info in EXPLAIN ANALYZE

[breezewish]

What problem does this PR solve?

Issue Number: ref #54245

Problem Summary:

Cherry-pick: https://github.com/tidbcloud/tidb-cse/pull/913 https://github.com/tidbcloud/tidb-cse/pull/925

What changed and how does it work?

Add a couple of metrics for benchmarking with vector scan.

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

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.3231%. Comparing base (55fadff) to head (4bad1a0).
Report is 3 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #56478        +/-   ##
================================================
+ Coverage   73.2713%   75.3231%   +2.0517%     
================================================
  Files          1626       1626                
  Lines        448916     449202       +286     
================================================
+ Hits         328927     338353      +9426     
+ Misses        99830      90222      -9608     
- Partials      20159      20627       +468     

Flag	Coverage Δ
integration	48.8373% <65.2173%> (?)
unit	72.4620% <100.0000%> (+0.0146%)	⬆️

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

Components	Coverage Δ
dumpling	52.9478% <ø> (ø)
parser	∅ <ø> (∅)
br	52.3492% <ø> (+6.8778%)	⬆️

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-10-08 12:46:41.682661906 +0000 UTC m=+963757.102874918: ☑️ agreed by winoros.
• 2024-10-08 13:45:26.630496592 +0000 UTC m=+967282.050709795: ☑️ agreed by lance6716.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hongyunyan, JaySon-Huang, lance6716, winoros

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