Support for Sparse Initializers (#5540)
Introduce sparse_initializers support.
Convert them to dense on model load and prune graph_proto_
so they don't consume space. Convert back to sparse on ORT Format model save.
Implement serializing sparse initializers to OrtFormat.
Fix Model::ToProto() to return original sparse initializers
Set a flag that graph_sync is needed when loading a simple ORT Format model.
otherwise nothing is resolved.
Add ORT Format history to README.md
ifdef MINIMAL build for DenseToSparseTensorInitializer
Allow duplicate initializers to support existing models.
Issue a warning instead of aborting.
* Revert "Remove SparseTensor support from minimal build. (#5114)"
This reverts commit 59ee8ffb17ffce7d0bce9692d8d58555df909ff9.
Signed-off-by: Dmitri Smirnov <dmitrism@microsoft.com>
