Add link for Alma e-resources

[Otterfan]

Users should be able to access electronic resources directly from the search results. Currently they have to go through the Primo result page.

An OpenURL with svc_dat=CTO seems to be a working e-resource API:

https://alma.exlibrisgroup.com/view/uresolver/01BC_INST/openurl?u.ignore_date_coverage=true&rft.mms_id=99118620620001021&rfr_id=info:sid/primo.exlibrisgroup.com&svc_dat=CTO&u.ignore_af_filter=true&internalAccess=true