[Model Group] Added support for model group

[lu-ohai]

Added support for model group

• Added two classes DataScienceModelGroup and OCIDataScienceModelGroup to support create/activate/deactivate/delete/list/get model group.

Unit tests

================================================== test session starts ===================================================
platform darwin -- Python 3.13.2, pytest-8.3.5, pluggy-1.5.0 -- /Library/Frameworks/Python.framework/Versions/3.13/bin/python3.13
cachedir: .pytest_cache
rootdir: /Users/Downloads/fix_logic/accelerated-data-science
configfile: pytest.ini
plugins: anyio-4.9.0, langsmith-0.3.15, mock-3.14.0, xdist-3.6.1
collected 7 items                                                                                                        

tests/unitary/default_setup/model/test_model_group.py::TestModelGroup::test_initialize_model_group PASSED          [ 14%]
tests/unitary/default_setup/model/test_model_group.py::TestModelGroup::test_create PASSED                          [ 28%]
tests/unitary/default_setup/model/test_model_group.py::TestModelGroup::test_activate PASSED                        [ 42%]
tests/unitary/default_setup/model/test_model_group.py::TestModelGroup::test_deactivate PASSED                      [ 57%]
tests/unitary/default_setup/model/test_model_group.py::TestModelGroup::test_delete PASSED                          [ 71%]
tests/unitary/default_setup/model/test_model_group.py::TestModelGroup::test_update PASSED                          [ 85%]
tests/unitary/default_setup/model/test_model_group.py::TestModelGroup::test_list PASSED                            [100%]

=================================================== 7 passed in 6.60s ====================================================

================================================== test session starts ===================================================
platform darwin -- Python 3.13.2, pytest-8.3.5, pluggy-1.5.0 -- /Library/Frameworks/Python.framework/Versions/3.13/bin/python3.13
cachedir: .pytest_cache
rootdir: /Users/Downloads/fix_logic/accelerated-data-science
configfile: pytest.ini
plugins: anyio-4.9.0, langsmith-0.3.15, mock-3.14.0, xdist-3.6.1
collected 7 items                                                                                                        

tests/unitary/default_setup/model/test_oci_model_group.py::TestOCIModelGroup::test_create PASSED                   [ 14%]
tests/unitary/default_setup/model/test_oci_model_group.py::TestOCIModelGroup::test_activate PASSED                 [ 28%]
tests/unitary/default_setup/model/test_oci_model_group.py::TestOCIModelGroup::test_deactivate PASSED               [ 42%]
tests/unitary/default_setup/model/test_oci_model_group.py::TestOCIModelGroup::test_delete PASSED                   [ 57%]
tests/unitary/default_setup/model/test_oci_model_group.py::TestOCIModelGroup::test_update PASSED                   [ 71%]
tests/unitary/default_setup/model/test_oci_model_group.py::TestOCIModelGroup::test_from_id PASSED                  [ 85%]
tests/unitary/default_setup/model/test_oci_model_group.py::TestOCIModelGroup::test_list PASSED                     [100%]

=================================================== 7 passed in 3.69s ====================================================

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