`header=` filter type option

[ShivanKaul]

filters/filters-general.txt:/^https?:\/\/[a-z]{8,15}\.com\/$/$xhr,3p,to=com,method=head,header=access-control-expose-headers:/X-DirectionPartner-Id/
filters/filters-general.txt:/^https?:\/\/[a-z]{8,15}\.net\/$/$xhr,3p,to=net,method=head,header=access-control-expose-headers:/X-DirectionPartner-Id/

See https://github.com/gorhill/ublock/wiki/static-filter-syntax#header