[Enhance] modify the tools files structure

[xiliu8006]

Modify the tools files structure

[codecov]

Codecov Report

Merging #339 (000aadc) into master (e366272) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #339   +/-   ##
=======================================
  Coverage   49.69%   49.69%           
=======================================
  Files         174      174           
  Lines       11758    11758           
  Branches     1838     1838           
=======================================
  Hits         5843     5843           
  Misses       5555     5555           
  Partials      360      360           

Flag	Coverage Δ
unittests	49.69% <ø> (ø)

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