refactor(carousel): update component

[mlmoravek]

This is part of #606

In this PR I refactored the carousel component from Options-API to Composition-API.

Proposed Changes

• Updated Carousel to composition api
• Refactor InjectChildMixin and ProvideParentMixin into composable
• update docs

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[codecov]

Codecov Report

Attention: 37 lines in your changes are missing coverage. Please review.

Comparison is base (6da9426) 63.89% compared to head (1d6e980) 63.48%.
Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #621      +/-   ##
===========================================
- Coverage    63.89%   63.48%   -0.41%     
===========================================
  Files           85       86       +1     
  Lines         5495     5532      +37     
  Branches      1561     1566       +5     
===========================================
+ Hits          3511     3512       +1     
- Misses        1873     1909      +36     
  Partials       111      111              

Flag	Coverage Δ
oruga	65.92% <ø> (ø)
oruga-next	52.49% <0.00%> (-1.91%)	⬇️

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Files	Coverage Δ
...es/oruga-next/src/composables/useParentProvider.ts	0.00% <0.00%> (ø)

... and 1 file with indirect coverage changes

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