tools: add //go:build ignore to the main files in tools/check

[YangKeao]

What problem does this PR solve?

Issue Number: close #54653

Problem Summary:

The VSCode keeps complaining about the duplicated main function in that folder.

What changed and how does it work?

Adding //go:build ignore to these files. It should work fine as they are simple go scripts and the folder don't need to be considered as a package.

Ref golang/go#49657

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.

  If this change didn't break CI, it means it's good enough.

Release note

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

None

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Defined2014, hawkingrei

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-07-16 05:34:54.942138326 +0000 UTC m=+332116.933079796: ☑️ agreed by hawkingrei.
• 2024-07-16 05:48:28.536648608 +0000 UTC m=+332930.527590078: ☑️ agreed by Defined2014.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 55.9453%. Comparing base (ee9f58c) to head (c85165f).
Report is 1 commits behind head on master.

Additional details and impacted files

@@                Coverage Diff                @@
##             master     #54654         +/-   ##
=================================================
- Coverage   72.7475%   55.9453%   -16.8022%     
=================================================
  Files          1551       1672        +121     
  Lines        436702     608842     +172140     
=================================================
+ Hits         317690     340619      +22929     
- Misses        99442     244916     +145474     
- Partials      19570      23307       +3737     

Flag	Coverage Δ
integration	37.2007% <ø> (?)
unit	71.7114% <ø> (-0.0548%)	⬇️

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

Components	Coverage Δ
dumpling	52.9656% <ø> (ø)
parser	∅ <ø> (∅)
br	52.5609% <ø> (+6.7118%)	⬆️