feat: add sub-command version #125

[zxx457]

#125

[codecov-commenter]

Codecov Report

Merging #146 (412e1c5) into master (8342919) will decrease coverage by 1.54%.
The diff coverage is 4.54%.

@@            Coverage Diff             @@
##           master     #146      +/-   ##
==========================================
- Coverage   65.68%   64.13%   -1.55%     
==========================================
  Files           6        6              
  Lines         373      382       +9     
  Branches       89       90       +1     
==========================================
  Hits          245      245              
- Misses        126      135       +9     
  Partials        2        2              

Impacted Files	Coverage Δ
src/Command.ts	39.53% <0.00%> (-1.60%)	⬇️
src/CAC.ts	65.51% <16.66%> (-1.86%)	⬇️

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