karmadactl init: add CRDs archive verification to enhance file system robustness

[zhzhuang-zju]

What type of PR is this?
/kind feature

What this PR does / why we need it:
karmadactl init provides a custom download path for CRDs files. Before processing the files, it's necessary to validate the CRDs archive to enhance system robustness.

• check if its file name includes unclean paths.

• check if the CRDs archive has the expected directory structure.

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 0% with 27 lines in your changes missing coverage. Please review.

Project coverage is 46.28%. Comparing base (f78e7e2) to head (b7afcaf).

Files with missing lines	Patch %	Lines
pkg/karmadactl/cmdinit/kubernetes/deploy.go	0.00%	18 Missing ⚠️
pkg/karmadactl/cmdinit/utils/util.go	0.00%	9 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5713      +/-   ##
==========================================
- Coverage   46.30%   46.28%   -0.03%     
==========================================
  Files         663      663              
  Lines       54686    54707      +21     
==========================================
- Hits        25324    25322       -2     
- Misses      27737    27760      +23     
  Partials     1625     1625              

Flag	Coverage Δ
unittests	46.28% <0.00%> (-0.03%)	⬇️

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[RainbowMango]

Wait for #5703 as the two PR will share common functions.

[zhzhuang-zju]

Wait for #5703 as the two PR will share common functions.

done~

[RainbowMango]

/assign

[RainbowMango]

/lgtm
/approve

[karmada-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: RainbowMango

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• pkg/karmadactl/cmdinit/OWNERS [RainbowMango]
• pkg/util/OWNERS [RainbowMango]

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