Adjust output JSON

[mjurczyk]

Solves #4

Add addCommaIf chainable method
Add trailing comma to array output
Add trailing comma to object output
Add trailing comma to string output
Add always-color tests

[codecov]

Codecov Report

Merging #5 into develop will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff           @@
##           develop     #5   +/-   ##
======================================
  Coverage      100%   100%           
======================================
  Files           19     19           
  Lines          157    169   +12     
======================================
+ Hits           157    169   +12

Impacted Files	Coverage Δ
src/utils/console/pretty-print/print.js	100% <100%> (ø)	⬆️
.../utils/console/pretty-print/pretty-print-string.js	100% <100%> (ø)	⬆️
src/utils/console/pretty-print/index.js	100% <100%> (ø)	⬆️
.../utils/console/pretty-print/pretty-print-object.js	100% <100%> (ø)	⬆️
...c/utils/console/pretty-print/pretty-print-array.js	100% <100%> (ø)	⬆️

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