torch.Package zipfile debugging printer (#52176)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/52176
Added tooling to print out zipfile structure for PackageExporter and PackageImporter.
API looks like:
```
exporter.print_file_structure("sss" /*only include files with this in the path*/)
importer3.print_file_structure(False /*don't print storage*/, "sss" /*only include files with this in the path*/)
```
The output looks like this with the storage hidden by default:
```
─── resnet.zip
├── .data
│ ├── extern_modules
│ └── version
├── models
│ └── models1.pkl
└── torchvision
└── models
├── resnet.py
└── utils.py
```
The output looks like this with the storage being printed out:
```
─── resnet_added_attr_test.zip
├── .data
│ ├── 94574437434544.storage
│ ├── 94574468343696.storage
│ ├── 94574470147744.storage
│ ├── 94574470198784.storage
│ ├── 94574470267968.storage
│ ├── 94574474917984.storage
│ ├── extern_modules
│ └── version
├── models
│ └── models1.pkl
└── torchvision
└── models
├── resnet.py
└── utils.py
```
If the output is filtered with the string 'utils' it'd looks like this:
```
─── resnet_added_attr_test.zip
└── torchvision
└── models
└── utils.py
```
Test Plan: Imported from OSS
Reviewed By: suo
Differential Revision: D26429795
Pulled By: Lilyjjo
fbshipit-source-id: 4fa25b0426912f939c7b52cedd6e217672891f21
