Add contains() and contains_node() to etl::intrusive_forward_list#1036

jwellbelove merged 2 commits intoETLCPP:pull-request/#1036-Add-contains()-and-contains_node()-to-etl--intrusive_forward_listETLCPP/etl:pull-request/#1036-Add-contains()-and-contains_node()-to-etl--intrusive_forward_listfrom

rolandreichweinbmw:intrusive-forward-list-add-containsrolandreichweinbmw/etl:intrusive-forward-list-add-containsCopy head branch name to clipboard