feat(datepicker): Add-Init-Config for the first initialization

[BGXi]

Add-Init-Config for DateRangePicker for the first initialization of the international date display.

PR Checklist

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• read and followed the CONTRIBUTING.md guide.
• built and tested the changes locally.
• added/updated tests.
• added/updated API documentation.
• added/updated demos.

[codecov]

Codecov Report

Merging #2897 into development will decrease coverage by 5.22%.
The diff coverage is 16.66%.

@@               Coverage Diff               @@
##           development    #2897      +/-   ##
===============================================
- Coverage        70.69%   65.46%   -5.23%     
===============================================
  Files              137      207      +70     
  Lines             4159     5603    +1444     
  Branches           735      985     +250     
===============================================
+ Hits              2940     3668     +728     
- Misses             914     1673     +759     
+ Partials           305      262      -43

Impacted Files	Coverage Δ
src/datepicker/bs-daterangepicker.component.ts	34.66% <16.66%> (ø)
src/datepicker/bs-datepicker.component.ts	36% <16.66%> (ø)
src/bs-moment/locale/index.ts	100% <0%> (ø)	⬆️
...picker/themes/bs/bs-custom-dates-view.component.ts	100% <0%> (ø)
...cker/themes/bs/bs-years-calendar-view.component.ts	73.68% <0%> (ø)
src/bs-moment/i18n/cs.ts	3.7% <0%> (ø)
src/datepicker/engine/format-days-calendar.ts	35.71% <0%> (ø)
src/datepicker/engine/flag-days-calendar.ts	15.62% <0%> (ø)
...hemes/bs/bs-daterangepicker-container.component.ts	30.76% <0%> (ø)
src/datepicker/engine/view-mode.ts	50% <0%> (ø)
... and 90 more

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[valorkin]

@BGXi hey, can you please do the same for datepicker?

[YevheniiaMazur]

Tested, looks good