Fix non-portable opendhtConfig.cmake: use proper targets and find_dependency#860

aberaud with Copilot wants to merge 2 commits into

mastersavoirfairelinux/opendht:masterfrom

copilot/fix-portability-of-opendhtconfigsavoirfairelinux/opendht:copilot/fix-portability-of-opendhtconfigCopy head branch name to clipboard