[WIP] SD3.5 IP-Adapter Pipeline Integration (#9987)
* Added support for single IPAdapter on SD3.5 pipeline
---------
Co-authored-by: hlky <hlky@hlky.ac>
Co-authored-by: Steven Liu <59462357+stevhliu@users.noreply.github.com>
Co-authored-by: YiYi Xu <yixu310@gmail.com>
