feat: Repetition-based StoppingCriteria for GraniteDocling (#2323)

* Experimental code for repetition detection, VLLM Streaming

Signed-off-by: Christoph Auer <cau@zurich.ibm.com>

* Update VLLM Streaming

Signed-off-by: Christoph Auer <cau@zurich.ibm.com>

* Update VLLM inference code, CLI and VLM specs

Signed-off-by: Christoph Auer <cau@zurich.ibm.com>

* Fix generation and decoder args for HF model

Signed-off-by: Christoph Auer <cau@zurich.ibm.com>

* Fix vllm device args

Signed-off-by: Christoph Auer <cau@zurich.ibm.com>

* Cleanup

Signed-off-by: Christoph Auer <cau@zurich.ibm.com>

* Bugfixes

Signed-off-by: Christoph Auer <cau@zurich.ibm.com>

* Remove streaming VLLM for the moment

Signed-off-by: Christoph Auer <cau@zurich.ibm.com>

* Add repetition StoppingCriteria for GraniteDocling/SmolDocling

Signed-off-by: Christoph Auer <cau@zurich.ibm.com>

* Make GenerationStopper base class and port for MLX

Signed-off-by: Christoph Auer <cau@zurich.ibm.com>

* Add streaming support and custom GenerationStopper support for ApiVlmModel

Signed-off-by: Christoph Auer <cau@zurich.ibm.com>

* Fixes for ApiVlmModel

Signed-off-by: Christoph Auer <cau@zurich.ibm.com>

* Fixes for ApiVlmModel

Signed-off-by: Christoph Auer <cau@zurich.ibm.com>

* Fix api_image_request_streaming when GenerationStopper triggers.

Signed-off-by: Christoph Auer <cau@zurich.ibm.com>

* Move DocTagsRepetitionStopper to utility unit, update examples

Signed-off-by: Christoph Auer <cau@zurich.ibm.com>

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Signed-off-by: Christoph Auer <cau@zurich.ibm.com>