Script for full android build to aars; script to run android tests (#26833)
Summary:
1. scripts/build_android_libtorch_and_pytorch_android.sh
- Builds libtorch for android_abis (by default for all 4: x86, x86_64, armeabi-v7a, arm-v8a) but cab be specified only custom list as a first parameter e.g. "x86"
- Creates symbolic links inside android/pytorch_android to results of the previous builds:
`pytorch_android/src/main/jniLibs/${abi}` -> `build_android/install/lib`
`pytorch_android/src/main/cpp/libtorch_include/${abi}` -> `build_android/install/include`
- Runs gradle assembleRelease to build aar files
proxy can be specified inside (for devservers)
2. android/run_tests.sh
Running pytorch_android tests, contains instruction how to setup and run android emulator in headless and noaudio mode to run it on devserver
proxy can be specified inside (for devservers)
#Test plan
Scenario to build x86 libtorch and android aars with it and run tests:
```
cd pytorch
sh scripts/build_android_libtorch_and_pytorch_android.sh x86
sh android/run_tests.sh
```
Tested on my devserver - build works, tests passed
Pull Request resolved: https://github.com/pytorch/pytorch/pull/26833
Differential Revision: D17673972
Pulled By: IvanKobzarev
fbshipit-source-id: 8cb7c3d131781854589de6428a7557c1ba7471e9
