Search listings e2e / SPA-884

[Xymmer]

Improve the current product search e2e test: https://stash.hybris.com/projects/C3PO/repos/spaccelerator/browse/projects/storefrontapp-e2e/src/suites/product-search.e2e-spec.ts

EDIT: github link: https://github.com/SAP/cloud-commerce-spartacus-storefront/blob/develop/projects/storefrontapp-e2e/src/suites/product-search.e2e-spec.ts

We should cover:

• Sorting
• Pagination
• Filtering with the facets
• Layout toggle

[kacperknapik]

Tests are improved: pagination, view modes, facets, sorting