Enable test_api IMethodTest in OSS (#63345)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/63345
This diff did the following few things to enable the tests:
1. Exposed IMethod as TORCH_API.
2. Linked torch_deploy to test_api if USE_DEPLOY == 1.
3. Generated torch::deploy examples when building torch_deploy library.
Test Plan: ./build/bin/test_api --gtest_filter=IMethodTest.*
Reviewed By: ngimel
Differential Revision: D30346257
Pulled By: alanwaketan
fbshipit-source-id: 932ae7d45790dfb6e00c51893933a054a0fad86d
