feat: Support for GraniteVision v4 (#3217)

* feat: add GV4

Signed-off-by: Peter Staar <taa@zurich.ibm.com>

* got everything to work with granite-vision-4

Signed-off-by: Peter Staar <taa@zurich.ibm.com>

* robustifying the output of granite-vision-v4

Signed-off-by: Peter Staar <taa@zurich.ibm.com>

* refactored the code to reduce duplications:

Signed-off-by: Peter Staar <taa@zurich.ibm.com>

* refactored the code to align with pipeline options

Signed-off-by: Peter Staar <taa@zurich.ibm.com>

* ran pre-commit

Signed-off-by: Peter Staar <taa@zurich.ibm.com>

* fixed the circular import

Signed-off-by: Peter Staar <taa@zurich.ibm.com>

* added the chart_extraction_options file

Signed-off-by: Peter Staar <taa@zurich.ibm.com>

---------

Signed-off-by: Peter Staar <taa@zurich.ibm.com>