Add Janus model (#36053)

* Iterative generation using input embeds

* Add Janus model

* discard changes

* Janus imports

* Refactor config and processor

* Added Vision tower of Janus

* Import Janus Image processor

* Vision tower fixes

* Refactor code

* Added VQ Model

* Complete model integration

* temp conversion script

* processor refactor

* Adding files to facilitate pulling

* Fixes after debugging

* Skip test for these models

* Add Janus Model

* discard changes

* Janus imports

* Refactor config and processor

* Added Vision tower of Janus

* Import Janus Image processor

* Vision tower fixes

* Refactor code

* Added VQ Model

* Complete model integration

* temp conversion script

* processor refactor

* Adding files to facilitate pulling

* Fixes after debugging

* Refactor to Text config

*  Added generate function

* Saving intermediate convert file. Still need to read configs from the hub and convert them to our format.

* Adding version that reads from the JSON files. Still ha...