[StaticRuntime] Add TensorExpr fusion with dynamic shapes in SR (#69475)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/69475
This diff adds TensorExpr fusion with dynamic shapes in SR. This includes tracing the input graph with sample inputs, and then performing fusion with generalization to get fused graphs with dynamic shapes.
ghstack-source-id: 146059043
Test Plan:
```
buck run mode/opt //caffe2/caffe2/fb/predictor:pytorch_predictor_test
```
Reviewed By: d1jang
Differential Revision: D32320088
fbshipit-source-id: 397f498878ddfcee9dad7a839652f79f034fefe3
