fix: add channel signal judge to allow onShutdownHook to complete or timeout

[li-jin-gou]

What type of PR is this?

• fix

Check the PR title.

• This PR title match the format: <type>(optional scope): <description>
• The description of this PR title is user-oriented and clear enough for others to understand.

(Optional) More detail description for this PR(en: English/zh: Chinese).

• en: add channel signal judge to allow onShutdownHook to complete or timeout
• zh(optional): 添加channel信号判断，允许 onShutdownHook 执行完成或超时

Which issue(s) this PR fixes:

[codecov]

Codecov Report

Base: 59.17% // Head: 59.00% // Decreases project coverage by -0.17% ⚠️

Coverage data is based on head (286d05c) compared to base (97bb37e).
Patch coverage: 0.00% of modified lines in pull request are covered.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #249      +/-   ##
===========================================
- Coverage    59.17%   59.00%   -0.18%     
===========================================
  Files           79       79              
  Lines         8111     8125      +14     
===========================================
- Hits          4800     4794       -6     
- Misses        2957     2977      +20     
  Partials       354      354              

Impacted Files	Coverage Δ
pkg/route/engine.go	61.98% <0.00%> (-2.53%)	⬇️
pkg/common/compress/compress.go	80.95% <0.00%> (-2.86%)	⬇️
pkg/app/client/client.go	71.42% <0.00%> (-0.80%)	⬇️
pkg/route/tree.go	96.67% <0.00%> (+0.01%)	⬆️

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[welkeyever]

coverage.txt 这个去掉吧..

[li-jin-gou]

coverage.txt 这个去掉吧..
done

[welkeyever]

lgtm