InskinBidAdapter: add schain object from the schain module if used by the publisher (#7541)
InskinBidAdapter: add schain object from the schain module if used by the publisher (#7541)

* Add schain object from the schain module if used by the publisher

* Fix linting issues
ImproveDigital/Prebid.js,gumgum/Prebid.js,gumgum/Prebid.js,ImproveDigital/Prebid.js,Niksok/Prebid.js,gumgum/Prebid.js,HuddledMasses/Prebid.js,Niksok/Prebid.js,prebid/Prebid.js,ImproveDigital/Prebid.js,PWyrembak/Prebid.js,PWyrembak/Prebid.js,prebid/Prebid.js,PubWise/Prebid.js,PWyrembak/Prebid.js,HuddledMasses/Prebid.js,PubWise/Prebid.js,PubWise/Prebid.js,Niksok/Prebid.js,prebid/Prebid.js,HuddledMasses/Prebid.js