Count closures arguments for the NArgs metric

[Luni-4]

Depends on #373

This PR fixes #342

Thanks in advance for your review! :)

[codecov-io]

Codecov Report

Merging #352 (7e8a531) into master (3b6afee) will increase coverage by 1.06%.
The diff coverage is 51.82%.

@@            Coverage Diff             @@
##           master     #352      +/-   ##
==========================================
+ Coverage   23.25%   24.32%   +1.06%     
==========================================
  Files          44       44              
  Lines        5486     5553      +67     
  Branches      805      836      +31     
==========================================
+ Hits         1276     1351      +75     
+ Misses       3688     3643      -45     
- Partials      522      559      +37     

Impacted Files	Coverage Δ
rust-code-analysis-cli/src/web/server.rs	58.91% <ø> (ø)
src/checker.rs	36.36% <ø> (ø)
src/output/dump_metrics.rs	32.89% <28.57%> (+<0.01%)	⬆️
src/metrics/nom.rs	58.22% <37.50%> (+6.91%)	⬆️
src/spaces.rs	61.84% <50.00%> (ø)
src/metrics/nargs.rs	54.16% <54.16%> (ø)
src/languages/language_javascript.rs	0.00% <0.00%> (ø)
src/metrics/halstead.rs	48.38% <0.00%> (+3.22%)	⬆️
... and 4 more

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[Luni-4]

Depends on #373

[codecov-commenter]

Codecov Report

Merging #352 (be5b6ba) into master (26c20bb) will increase coverage by 1.08%.
The diff coverage is 74.33%.

@@            Coverage Diff             @@
##           master     #352      +/-   ##
==========================================
+ Coverage   52.91%   53.99%   +1.08%     
==========================================
  Files          45       45              
  Lines        3572     3728     +156     
  Branches      844      871      +27     
==========================================
+ Hits         1890     2013     +123     
- Misses       1121     1127       +6     
- Partials      561      588      +27     

Impacted Files	Coverage Δ
rust-code-analysis-web/src/web/server.rs	60.64% <ø> (ø)
src/checker.rs	66.66% <ø> (ø)
src/output/dump_metrics.rs	33.76% <28.57%> (-0.01%)	⬇️
src/metrics/nargs.rs	75.70% <75.70%> (ø)
src/spaces.rs	64.67% <80.00%> (+0.42%)	⬆️

---

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[marco-c]

Thanks!