v5 POC #15566 cxCartItemContext, fixed styling

[Platonn]

Same as v3 POC plus:

• same outlet components used in added-to-cart and in cart listing view, no need for differentiation
• OutletDirective suport for instantiating components within a custom wrapper template - input [cxOutletWrapperTemplate]
• WARNING: this implementation is tricky/hacky. It uses native DOM operation appendChild and is not "the Angular way" of doing things. Several things might break, when moving/adding other elements inside the same VCR. For more, see example stackblitz https://stackblitz.com/edit/ng-create-component-within-wrapper-template-v1

related to #15566