Upload Whisper Base and Whisper Small

Whisper Tiny is available on GitHub.
These were uploaded separately to avoid having large files as part of every git checkout.
Whisper Tiny was left in Git to enable automated testing of Fonnx's Whisper implementation

whisper_base.onnx

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4d6622bca03e40a8c676e1d5f05f677ae37acab958c53d11df2da6b857fb0c01
+size 139097483

whisper_small.onnx

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f839e364dffa5ec02d3bcc3996568992177d920eb7a334a75ed99239f7cde8c8
+size 442795564