refact "cscli metrics" part 2

[mmetc]

• encapsulate globals
• types and methods for each table

[github-actions]

@mmetc: There are no 'kind' label on this PR. You need a 'kind' label to generate the release automatically.

• /kind feature
• /kind enhancement
• /kind fix
• /kind chore
• /kind dependencies

Details

I am a bot created to help the crowdsecurity developers manage community feedback and contributions. You can check out my manifest file to understand my behavior and what I can do. If you want to use this for your project, you can check out the BirthdayResearch/oss-governance-bot repository.

[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

I am a bot created to help the crowdsecurity developers manage community feedback and contributions. You can check out my manifest file to understand my behavior and what I can do. If you want to use this for your project, you can check out the BirthdayResearch/oss-governance-bot repository.

[codecov]

Codecov Report

Attention: 90 lines in your changes are missing coverage. Please review.

Comparison is base (5ff8a03) 57.29% compared to head (b871843) 57.27%.

Files	Patch %	Lines
cmd/crowdsec-cli/metrics.go	25.92%	80 Missing ⚠️
cmd/crowdsec-cli/metrics_table.go	61.53%	1 Missing and 9 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2806      +/-   ##
==========================================
- Coverage   57.29%   57.27%   -0.03%     
==========================================
  Files         238      238              
  Lines       30590    30584       -6     
==========================================
- Hits        17527    17516      -11     
- Misses      11413    11418       +5     
  Partials     1650     1650              

Flag	Coverage Δ
bats	37.08% <32.83%> (+<0.01%)	⬆️
unit-linux	52.22% <ø> (-0.01%)	⬇️
unit-windows	47.76% <ø> (+0.01%)	⬆️

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