Add setup command to init the config

[LinuxSuRen]

No description provided.

[codecov]

Codecov Report

Merging #184 (26b6995) into master (4128c61) will decrease coverage by 0.23%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #184      +/-   ##
==========================================
- Coverage   15.55%   15.32%   -0.24%     
==========================================
  Files          29       30       +1     
  Lines        1562     1586      +24     
==========================================
  Hits          243      243              
- Misses       1299     1323      +24     
  Partials       20       20              

Flag	Coverage Δ
unittests	15.32% <0.00%> (-0.24%)	⬇️

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Impacted Files	Coverage Δ
cmd/get.go	0.00% <ø> (ø)
cmd/root.go	0.00% <0.00%> (ø)
cmd/setup.go	0.00% <0.00%> (ø)

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