fix: Fixes lack of export for Danish locale. Fixes #123.

[michaelkrog]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/NG-ZORRO/ng-zorro-antd-mobile/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[X] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Application (the showcase website) / infrastructure changes
[ ] Other... Please describe:

What is the current behavior?

Issue Number: #123

What is the new behavior?

The Danish locale implementation is complete.

Does this PR introduce a breaking change?

[ ] Yes
[X] No

Other information

[codecov]

Codecov Report

Merging #124 into master will increase coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master    #124      +/-   ##
=========================================
+ Coverage   86.46%   86.5%   +0.03%     
=========================================
  Files         211     221      +10     
  Lines        6961    6981      +20     
  Branches      978     978              
=========================================
+ Hits         6019    6039      +20     
  Misses        550     550              
  Partials      392     392

Impacted Files	Coverage Δ
components/locale-provider/languages/index.ts	100% <ø> (ø)	⬆️
components/pagination/locale/da_DK.ts	100% <0%> (ø)
components/input-item/locale/da_DK.ts	100% <0%> (ø)
components/menu/locale/da_DK.ts	100% <0%> (ø)
components/pull-to-refresh/locale/da_DK.ts	100% <0%> (ø)
components/picker/locale/da_DK.ts	100% <0%> (ø)
components/search-bar/locale/da_DK.ts	100% <0%> (ø)
components/date-picker/locale/da_DK.ts	100% <0%> (ø)
components/locale-provider/languages/da_DK.ts	100% <0%> (ø)
... and 2 more

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