refact "cscli explain"

[mmetc]

No description provided.

[github-actions]

@mmetc: There are no area labels on this PR. You can add as many areas as you see fit.

• /area agent
• /area local-api
• /area cscli
• /area appsec
• /area security
• /area configuration

Details

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[codecov]

Codecov Report

Attention: 6 lines in your changes are missing coverage. Please review.

Comparison is base (2853410) 57.81% compared to head (e778f72) 57.87%.

Files	Patch %	Lines
cmd/crowdsec-cli/explain.go	87.75%	4 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2835      +/-   ##
==========================================
+ Coverage   57.81%   57.87%   +0.06%     
==========================================
  Files         238      238              
  Lines       30908    30863      -45     
==========================================
- Hits        17868    17863       -5     
+ Misses      11394    11369      -25     
+ Partials     1646     1631      -15     

Flag	Coverage Δ
bats	37.74% <88.00%> (+0.02%)	⬆️
unit-linux	52.35% <ø> (-0.04%)	⬇️
unit-windows	47.80% <ø> (-0.01%)	⬇️

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