feat(datepicker): add aria-attributes

[tarusin]

Closes #4132

PR Checklist

Before creating new PR, please take a look at checklist below to make sure that you've done everything that needs to be done before we can merge it.

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

[codecov]

Codecov Report

Merging #4141 into development will decrease coverage by 0.06%.
The diff coverage is n/a.

@@               Coverage Diff               @@
##           development    #4141      +/-   ##
===============================================
- Coverage        72.23%   72.17%   -0.07%     
===============================================
  Files              253      253              
  Lines             8238     8238              
  Branches          1565     1565              
===============================================
- Hits              5951     5946       -5     
- Misses            1866     1868       +2     
- Partials           421      424       +3

Impacted Files	Coverage Δ
...hemes/bs/bs-daterangepicker-container.component.ts	30.76% <ø> (ø)	⬆️
...ker/themes/bs/bs-datepicker-container.component.ts	38.7% <ø> (ø)	⬆️
src/chronos/i18n/it.ts	71.42% <0%> (-28.58%)	⬇️
src/chronos/i18n/pl.ts	72.22% <0%> (-5.56%)	⬇️
src/chronos/i18n/uk.ts	78.04% <0%> (-2.44%)	⬇️

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[YevheniiaMazur]

Tested, looks good