Loading module from android asset (#30378)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/30378
Loading module directly from android assets. Iteration on https://github.com/pytorch/pytorch/pull/30109
Loading Module:
```
mModule = AndroidUtils.loadModuleFromAsset(assetName, getAssets());
```
`org.pytorch.AndroidUtils` is excluded from pytorch_jni host build
Testing:
test_app module load switched to this approach and works fine
```
gradle test_app:installMobNet2QuantDebug -PABI_FILTERS=x86 && adb shell am start -n org.pytorch.testapp.mobNet2Quant/org.pytorch.testapp.MainActivity
```
Test Plan: Imported from OSS
Differential Revision: D18893269
Pulled By: IvanKobzarev
fbshipit-source-id: a7c73776f40e9c67bef233da05db56cc6efbe76a
