adopt the swagger-stats as API operation metrics collection tool.

[metrue]

Issue: #536
Summary:
FYI: https://github.com/slanatech/swagger-stats

The checklist before PR is ready for review:

• has unit testing for new added codes
• has functional testing for new added features
• has checked the lint or style issues
• README updated if need

[codecov]

Codecov Report

Merging #537 into master will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #537   +/-   ##
=======================================
  Coverage   24.64%   24.64%           
=======================================
  Files          53       53           
  Lines        1927     1927           
=======================================
  Hits          475      475           
  Misses       1371     1371           
  Partials       81       81           

Impacted Files	Coverage Δ
bundler/rust/rust.go	100.00% <100.00%> (ø)

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