smartx Bid Adapter: Add support for Schain (#4154)
smartx Bid Adapter: Add support for Schain (#4154)

* initial commit

* adjustments

* adjustments

* adjustments

* typo, further adjustments

* removed userIds and schain support

* Added optionals to outstream and made formatting

* Update smartx.md

minor edits for clarification and readability.

* adjusted outstream_options

* remove outstream_function, added pbjs_version_notes

* bugfix outstream options for default outstream renderer configuration

* refactor descriptions and adding "visibilityThreshold"

* Add schain support

Co-authored-by: Gino <cd16bf1bdc4026a6cf9cf61c601f05b78202bebe@smartclip.tv>
Co-authored-by: Jean Stemp <763f545cdeb40be77d875cd5030f229ee2859c96@users.noreply.github.com>
Co-authored-by: smartclip-adtech <f4c9ece141720774bd00c67d4860848db5a5acdf@users.noreply.github.com>
prebid/prebid.github.io,prebid/prebid.github.io,prebid/prebid.github.io