🔴 [VLM] Add base model without head (#37033)

* i guessreverted all CdGen classes

* style

* llava onevision

* fix copies

* fix some tests

* some more tests

* dump

* skip these

* nevermind, i am dumb

* revert fix not needed

* fixup

* fixup

* another fixup

* more fixup to make ci finally happy

* fixup after rebasing

* fix qwen tests

* add internVL + typos here and there

* image token index -> id

* style

* fix init weights

* revert blip-2 not supported

* address comments

* fix copies

* revert blip2 test file as well

* as discussed internally, revert back CdGen models

* fix some tests

* fix more tests for compile

* CI red

* fix copies

* enumerate explicitly allowed models

* address comments

* fix tests

* fixup

* style again

* add tests for new model class

* another fixup ( x _ x )

* [fixup] unused attributes can be removed post-deprecation

docs/source/en/model_doc/paligemma.md

@@ -174,6 +174,10 @@ visualizer("<img> What is in this image?")
 
 [[autodoc]] PaliGemmaProcessor
 
+## PaliGemmaModel
+
+[[autodoc]] PaliGemmaModel
+
 ## PaliGemmaForConditionalGeneration
 
 [[autodoc]] PaliGemmaForConditionalGeneration