CIF-2526 - Add add-to-cart button in all product collections

[LSantha]

• implemented 'Add to Cart' and 'Add to Wish List' button for the components: productcollection, productlist, searchresults, productcarousel, relatedproducts
• updated UI tests, uint tests and intergation tests
• updated exmamples library pages
• updated the readme of related components

Related Issue

CIF-2526

How Has This Been Tested?

unit tests, UI tets, integration tests, manual testing

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have signed the Adobe Open Source CLA.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes and the overall coverage did not decrease.
• All unit tests pass on CircleCi.
• I ran all tests locally and they pass.

[codecov]

Codecov Report

Merging #853 (7929636) into master (e59ff54) will increase coverage by 0.15%.
The diff coverage is 83.95%.

@@             Coverage Diff              @@
##             master     #853      +/-   ##
============================================
+ Coverage     69.47%   69.62%   +0.15%     
- Complexity     1150     1160      +10     
============================================
  Files           316      320       +4     
  Lines          8396     8475      +79     
  Branches       1265     1269       +4     
============================================
+ Hits           5833     5901      +68     
- Misses         2153     2159       +6     
- Partials        410      415       +5     

Flag	Coverage Δ
integration	55.25% <56.00%> (+0.02%)	⬆️
jest	86.40% <ø> (ø)
karma	95.44% <96.42%> (+0.06%)	⬆️
unittests	90.86% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...erce/core/components/internal/models/v1/Utils.java	47.82% <0.00%> (-2.18%)	⬇️
...models/v1/productcarousel/ProductCarouselImpl.java	64.89% <ø> (ø)
...nal/models/v1/productteaser/ProductTeaserImpl.java	44.15% <0.00%> (+0.56%)	⬆️
...models/v1/relatedproducts/RelatedProductsImpl.java	55.76% <ø> (ø)
...core/components/models/common/ProductListItem.java	0.00% <0.00%> (ø)
...onents/models/productcarousel/ProductCarousel.java	0.00% <0.00%> (ø)
...ts/models/productcollection/ProductCollection.java	0.00% <0.00%> (ø)
...ls/v1/productcollection/ProductCollectionImpl.java	53.84% <71.42%> (+3.84%)	⬆️
...models/v1/productcarousel/ProductCarouselBase.java	91.30% <80.00%> (-8.70%)	⬇️
...rousel/v1/productcarousel/clientlibs/js/actions.js	96.42% <96.42%> (ø)
... and 2 more

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