Implements SplitDimToListd

[bhashemian]

Fixes #5109

Description

This PR implements SplitDimToListd that uses SplitDim and for a given dictionary of tensors, split the tensor along the given dimension and store it as a list of dictionaries with the same keys but having the a split of the tensor.

Types of changes

• Non-breaking change (fix or new feature that would not break existing functionality).
• New tests added to cover the changes.
• Integration tests passed locally by running ./runtests.sh -f -u --net --coverage.
• Quick tests passed locally by running ./runtests.sh --quick --unittests --disttests.
• In-line docstrings updated.
• Documentation updated, tested make html command in the docs/ folder.

[bhashemian]

closing in favor of other solution #5115