Rearrange inference OPS and stop using builder.load (#5490)
This PR mainly handles all places where InferenceBuilder is used to
access any op or a specific implementation for an op.
Instead an op is defined, and its proper implementation is picked inside
and the usage will be transparent to the user.
What was done in the PR:
1) Added missing ops (added a py file with fallback mechanism)
2) Added missing fallback implementations for existing ops
3) removed all usages for builder.load and replaced them with ops
instead.
4) added workspace op and inferenceContext which contains all workspace
related functions and inferenceContext is the python fallback of
inferenceContext in CUDA
5) a small change to softmax_context signature to fit the fallback
signature.
---------
Co-authored-by: Joe Mayer <114769929+jomayeri@users.noreply.github.com>
Co-authored-by: Lev Kurilenko <113481193+lekurile@users.noreply.github.com>
Co-authored-by: Logan Adams <114770087+loadams@users.noreply.github.com>
Co-authored-by: Olatunji Ruwase <olruwase@microsoft.com>
