feat(formatters): consolidate all Date Formatters into 1 method call DRY

[ghiscoding]

• all Date Formatters are built the same way, we just tell them the FieldType and the Formatter structure is the same, we can consolidate all of them into 1 method call and reduce a lot the lib footprint size while still being able to add more Date Formatters in the future

[codecov-io]

Codecov Report

Merging #193 into master will decrease coverage by 0.91%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##           master     #193     +/-   ##
=========================================
- Coverage   39.93%   39.02%   -0.9%     
=========================================
  Files         158      146     -12     
  Lines        6608     6510     -98     
  Branches     1960     1949     -11     
=========================================
- Hits         2638     2540     -98     
  Misses       3961     3961             
  Partials        9        9

Impacted Files	Coverage Δ
...lickgrid/grouping-formatters/avgTotalsFormatter.ts	100% <100%> (ø)	⬆️
...slickgrid/formatters/dollarColoredBoldFormatter.ts	100% <100%> (ø)	⬆️
...id/grouping-formatters/avgTotalsDollarFormatter.ts	100% <100%> (ø)	⬆️
...lickgrid/grouping-formatters/sumTotalsFormatter.ts	100% <100%> (ø)	⬆️
...grid/grouping-formatters/sumTotalsBoldFormatter.ts	100% <100%> (ø)	⬆️
...ping-formatters/sumTotalsDollarColoredFormatter.ts	100% <100%> (ø)	⬆️
...s/angular-slickgrid/formatters/percentFormatter.ts	100% <100%> (ø)	⬆️
...-formatters/sumTotalsDollarColoredBoldFormatter.ts	100% <100%> (ø)	⬆️
...lickgrid/grouping-formatters/maxTotalsFormatter.ts	100% <100%> (ø)	⬆️
...s/angular-slickgrid/formatters/decimalFormatter.ts	100% <100%> (ø)	⬆️
... and 12 more

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