[ci-skip] Add checkpoint/resume for IDiscreteFunctionDescriptor

src/language/modules/SchemeModule.cpp

src/utils/checkpointing/CheckpointUtils.cpp

src/utils/checkpointing/CheckpointUtils.hpp

src/utils/checkpointing/DiscreteFunctionTypeHFType.hpp

src/utils/checkpointing/ResumeUtils.cpp

src/utils/checkpointing/ResumeUtils.hpp